<?xml version="1.0" encoding="us-ascii"?>
<!--Generated by Disclosure Solutions PROFILE 2.5.3.0 Copyright 1995 - 2013 Thomson Reuters Accelus. All rights reserved.-->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:t1="http://xbrl.org/2005/xbrldt">
  <link:roleRef roleURI="http://targaresourcescorp.com/role/SegmentInformationDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#SegmentInformationDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/SupplementalCashFlowInformationDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#SupplementalCashFlowInformationDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/FairValueMeasurementsDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#FairValueMeasurementsDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/DerivativeInstrumentsAndHedgingActivitiesDerivativeInstrumentsAndHedgingActivitiesDerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#DerivativeInstrumentsAndHedgingActivitiesDerivativeInstrumentsAndHedgingActivitiesDerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/DerivativeInstrumentsAndHedgingActivitiesDerivativeInstrumentsAndHedgingActivitiesFairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#DerivativeInstrumentsAndHedgingActivitiesDerivativeInstrumentsAndHedgingActivitiesFairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/DerivativeInstrumentsAndHedgingActivitiesDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#DerivativeInstrumentsAndHedgingActivitiesDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/EarningsPerCommonShareDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#EarningsPerCommonShareDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/CommonStockAndRelatedMattersDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#CommonStockAndRelatedMattersDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/PartnershipUnitsAndRelatedMattersDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#PartnershipUnitsAndRelatedMattersDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/DebtObligationsDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#DebtObligationsDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/AccountsPayableAndAccruedLiabilitiesDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#AccountsPayableAndAccruedLiabilitiesDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/InvestmentInUnconsolidatedAffiliateDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#InvestmentInUnconsolidatedAffiliateDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/AssetRetirementObligationsDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#AssetRetirementObligationsDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/PropertyPlantAndEquipmentAndIntangibleAssetsDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#PropertyPlantAndEquipmentAndIntangibleAssetsDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/InventoriesDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#InventoriesDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/BasisOfPresentationDetails" xlink:type="simple" xlink:href="trgp-20140331.xsd#BasisOfPresentationDetails" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/SegmentInformationTables" xlink:type="simple" xlink:href="trgp-20140331.xsd#SegmentInformationTables" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/SupplementalCashFlowInformationTables" xlink:type="simple" xlink:href="trgp-20140331.xsd#SupplementalCashFlowInformationTables" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/FairValueMeasurementsTables" xlink:type="simple" xlink:href="trgp-20140331.xsd#FairValueMeasurementsTables" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/DerivativeInstrumentsAndHedgingActivitiesTables" xlink:type="simple" xlink:href="trgp-20140331.xsd#DerivativeInstrumentsAndHedgingActivitiesTables" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/EarningsPerCommonShareTables" xlink:type="simple" xlink:href="trgp-20140331.xsd#EarningsPerCommonShareTables" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/CommonStockAndRelatedMattersTables" xlink:type="simple" xlink:href="trgp-20140331.xsd#CommonStockAndRelatedMattersTables" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/PartnershipUnitsAndRelatedMattersTables" xlink:type="simple" xlink:href="trgp-20140331.xsd#PartnershipUnitsAndRelatedMattersTables" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/DebtObligationsTables" xlink:type="simple" xlink:href="trgp-20140331.xsd#DebtObligationsTables" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/AccountsPayableAndAccruedLiabilitiesTables" xlink:type="simple" xlink:href="trgp-20140331.xsd#AccountsPayableAndAccruedLiabilitiesTables" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/InvestmentInUnconsolidatedAffiliateTables" xlink:type="simple" xlink:href="trgp-20140331.xsd#InvestmentInUnconsolidatedAffiliateTables" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/AssetRetirementObligationsTables" xlink:type="simple" xlink:href="trgp-20140331.xsd#AssetRetirementObligationsTables" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/PropertyPlantAndEquipmentAndIntangibleAssetsTables" xlink:type="simple" xlink:href="trgp-20140331.xsd#PropertyPlantAndEquipmentAndIntangibleAssetsTables" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/InventoriesTables" xlink:type="simple" xlink:href="trgp-20140331.xsd#InventoriesTables" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/BasisOfPresentationTables" xlink:type="simple" xlink:href="trgp-20140331.xsd#BasisOfPresentationTables" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/SignificantAccountingPoliciesPolicies" xlink:type="simple" xlink:href="trgp-20140331.xsd#SignificantAccountingPoliciesPolicies" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/BasisOfPresentationPolicies" xlink:type="simple" xlink:href="trgp-20140331.xsd#BasisOfPresentationPolicies" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/SegmentInformation" xlink:type="simple" xlink:href="trgp-20140331.xsd#SegmentInformation" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/SupplementalCashFlowInformation" xlink:type="simple" xlink:href="trgp-20140331.xsd#SupplementalCashFlowInformation" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/CommitmentsAndContingencies" xlink:type="simple" xlink:href="trgp-20140331.xsd#CommitmentsAndContingencies" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/RelatedPartyTransactions" xlink:type="simple" xlink:href="trgp-20140331.xsd#RelatedPartyTransactions" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/FairValueMeasurements" xlink:type="simple" xlink:href="trgp-20140331.xsd#FairValueMeasurements" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/DerivativeInstrumentsAndHedgingActivities" xlink:type="simple" xlink:href="trgp-20140331.xsd#DerivativeInstrumentsAndHedgingActivities" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/EarningsPerCommonShare" xlink:type="simple" xlink:href="trgp-20140331.xsd#EarningsPerCommonShare" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/CommonStockAndRelatedMatters" xlink:type="simple" xlink:href="trgp-20140331.xsd#CommonStockAndRelatedMatters" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/PartnershipUnitsAndRelatedMatters" xlink:type="simple" xlink:href="trgp-20140331.xsd#PartnershipUnitsAndRelatedMatters" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/DebtObligations" xlink:type="simple" xlink:href="trgp-20140331.xsd#DebtObligations" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/AccountsPayableAndAccruedLiabilities" xlink:type="simple" xlink:href="trgp-20140331.xsd#AccountsPayableAndAccruedLiabilities" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/InvestmentInUnconsolidatedAffiliate" xlink:type="simple" xlink:href="trgp-20140331.xsd#InvestmentInUnconsolidatedAffiliate" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/AssetRetirementObligations" xlink:type="simple" xlink:href="trgp-20140331.xsd#AssetRetirementObligations" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/PropertyPlantAndEquipmentAndIntangibleAssets" xlink:type="simple" xlink:href="trgp-20140331.xsd#PropertyPlantAndEquipmentAndIntangibleAssets" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/Inventories" xlink:type="simple" xlink:href="trgp-20140331.xsd#Inventories" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/SignificantAccountingPolicies" xlink:type="simple" xlink:href="trgp-20140331.xsd#SignificantAccountingPolicies" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/BasisOfPresentation" xlink:type="simple" xlink:href="trgp-20140331.xsd#BasisOfPresentation" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/Organization" xlink:type="simple" xlink:href="trgp-20140331.xsd#Organization" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" xlink:type="simple" xlink:href="trgp-20140331.xsd#ConsolidatedStatementsOfCashFlowsUnaudited" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/ConsolidatedStatementsOfChangesInOwnersEquityUnaudited" xlink:type="simple" xlink:href="trgp-20140331.xsd#ConsolidatedStatementsOfChangesInOwnersEquityUnaudited" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/ConsolidatedStatementsOfComprehensiveIncomeLossUnaudited" xlink:type="simple" xlink:href="trgp-20140331.xsd#ConsolidatedStatementsOfComprehensiveIncomeLossUnaudited" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/ConsolidatedStatementsOfOperationsUnaudited" xlink:type="simple" xlink:href="trgp-20140331.xsd#ConsolidatedStatementsOfOperationsUnaudited" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/ConsolidatedBalanceSheetsUnauditedParenthetical" xlink:type="simple" xlink:href="trgp-20140331.xsd#ConsolidatedBalanceSheetsUnauditedParenthetical" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/ConsolidatedBalanceSheetsUnaudited" xlink:type="simple" xlink:href="trgp-20140331.xsd#ConsolidatedBalanceSheetsUnaudited" />
  <link:roleRef roleURI="http://targaresourcescorp.com/role/DocumentAndEntityInformation" xlink:type="simple" xlink:href="trgp-20140331.xsd#DocumentAndEntityInformation" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/DocumentAndEntityInformation" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/ConsolidatedBalanceSheetsUnaudited" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/ConsolidatedBalanceSheetsUnauditedParenthetical" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/ConsolidatedStatementsOfOperationsUnaudited" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/ConsolidatedStatementsOfComprehensiveIncomeLossUnaudited" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/ConsolidatedStatementsOfChangesInOwnersEquityUnaudited">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:title="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:title="definition: StatementLineItems to StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharesIssued" xlink:label="SharesIssued" xlink:title="SharesIssued" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="SharesIssued" xlink:title="definition: StatementLineItems to SharesIssued" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross" xlink:label="StockIssuedDuringPeriodValueShareBasedCompensationGross" xlink:title="StockIssuedDuringPeriodValueShareBasedCompensationGross" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="StockIssuedDuringPeriodValueShareBasedCompensationGross" xlink:title="definition: StatementLineItems to StockIssuedDuringPeriodValueShareBasedCompensationGross" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross" xlink:label="StockIssuedDuringPeriodSharesShareBasedCompensationGross" xlink:title="StockIssuedDuringPeriodSharesShareBasedCompensationGross" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="StockIssuedDuringPeriodSharesShareBasedCompensationGross" xlink:title="definition: StatementLineItems to StockIssuedDuringPeriodSharesShareBasedCompensationGross" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_AccrualOfDistributionEquivalentRights" xlink:label="AccrualOfDistributionEquivalentRights" xlink:title="AccrualOfDistributionEquivalentRights" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="AccrualOfDistributionEquivalentRights" xlink:title="definition: StatementLineItems to AccrualOfDistributionEquivalentRights" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodValue" xlink:label="StockRepurchasedDuringPeriodValue" xlink:title="StockRepurchasedDuringPeriodValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="StockRepurchasedDuringPeriodValue" xlink:title="definition: StatementLineItems to StockRepurchasedDuringPeriodValue" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodShares" xlink:label="StockRepurchasedDuringPeriodShares" xlink:title="StockRepurchasedDuringPeriodShares" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="StockRepurchasedDuringPeriodShares" xlink:title="definition: StatementLineItems to StockRepurchasedDuringPeriodShares" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest" xlink:label="NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest" xlink:title="NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest" xlink:title="definition: StatementLineItems to NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinorityInterestDecreaseFromRedemptions" xlink:label="MinorityInterestDecreaseFromRedemptions" xlink:title="MinorityInterestDecreaseFromRedemptions" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="MinorityInterestDecreaseFromRedemptions" xlink:title="definition: StatementLineItems to MinorityInterestDecreaseFromRedemptions" order="9.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" xlink:label="NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" xlink:title="NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" xlink:title="definition: StatementLineItems to NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" order="10.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Dividends" xlink:label="Dividends" xlink:title="Dividends" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="Dividends" xlink:title="definition: StatementLineItems to Dividends" order="11.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:label="MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:title="MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:title="definition: StatementLineItems to MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" order="12.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="OtherComprehensiveIncomeLossNetOfTax" xlink:title="OtherComprehensiveIncomeLossNetOfTax" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="OtherComprehensiveIncomeLossNetOfTax" xlink:title="definition: StatementLineItems to OtherComprehensiveIncomeLossNetOfTax" order="13.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossIncludingPortionAttributableToNoncontrollingInterest" xlink:label="IncomeLossIncludingPortionAttributableToNoncontrollingInterest" xlink:title="IncomeLossIncludingPortionAttributableToNoncontrollingInterest" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="IncomeLossIncludingPortionAttributableToNoncontrollingInterest" xlink:title="definition: StatementLineItems to IncomeLossIncludingPortionAttributableToNoncontrollingInterest" order="14.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="StatementLineItems" xlink:to="StatementTable" xlink:title="definition: StatementLineItems to StatementTable" order="15.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="StatementEquityComponentsAxis" xlink:title="StatementEquityComponentsAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="StatementTable" xlink:to="StatementEquityComponentsAxis" xlink:title="definition: StatementTable to StatementEquityComponentsAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="EquityComponentDomain" xlink:title="EquityComponentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="StatementEquityComponentsAxis" xlink:to="EquityComponentDomain" xlink:title="definition: StatementEquityComponentsAxis to EquityComponentDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="EquityComponentDomain_2" xlink:title="EquityComponentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="StatementEquityComponentsAxis" xlink:to="EquityComponentDomain_2" xlink:title="definition: StatementEquityComponentsAxis to EquityComponentDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockMember" xlink:label="CommonStockMember" xlink:title="CommonStockMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EquityComponentDomain" xlink:to="CommonStockMember" xlink:title="definition: EquityComponentDomain to CommonStockMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="AdditionalPaidInCapitalMember" xlink:title="AdditionalPaidInCapitalMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EquityComponentDomain" xlink:to="AdditionalPaidInCapitalMember" xlink:title="definition: EquityComponentDomain to AdditionalPaidInCapitalMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="RetainedEarningsMember" xlink:title="RetainedEarningsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EquityComponentDomain" xlink:to="RetainedEarningsMember" xlink:title="definition: EquityComponentDomain to RetainedEarningsMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="AccumulatedOtherComprehensiveIncomeMember" xlink:title="AccumulatedOtherComprehensiveIncomeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EquityComponentDomain" xlink:to="AccumulatedOtherComprehensiveIncomeMember" xlink:title="definition: EquityComponentDomain to AccumulatedOtherComprehensiveIncomeMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TreasuryStockMember" xlink:label="TreasuryStockMember" xlink:title="TreasuryStockMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EquityComponentDomain" xlink:to="TreasuryStockMember" xlink:title="definition: EquityComponentDomain to TreasuryStockMember" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:label="NoncontrollingInterestMember" xlink:title="NoncontrollingInterestMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EquityComponentDomain" xlink:to="NoncontrollingInterestMember" xlink:title="definition: EquityComponentDomain to NoncontrollingInterestMember" order="6.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/Organization" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/BasisOfPresentation" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/SignificantAccountingPolicies" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/Inventories" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/PropertyPlantAndEquipmentAndIntangibleAssets" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/AssetRetirementObligations" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/InvestmentInUnconsolidatedAffiliate" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/AccountsPayableAndAccruedLiabilities" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/DebtObligations" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/PartnershipUnitsAndRelatedMatters" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/CommonStockAndRelatedMatters" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/EarningsPerCommonShare" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/DerivativeInstrumentsAndHedgingActivities" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/FairValueMeasurements" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/RelatedPartyTransactions" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/CommitmentsAndContingencies" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/SupplementalCashFlowInformation" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/SegmentInformation" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/BasisOfPresentationPolicies" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/SignificantAccountingPoliciesPolicies" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/BasisOfPresentationTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/InventoriesTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/PropertyPlantAndEquipmentAndIntangibleAssetsTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/AssetRetirementObligationsTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/InvestmentInUnconsolidatedAffiliateTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/AccountsPayableAndAccruedLiabilitiesTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/DebtObligationsTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/PartnershipUnitsAndRelatedMattersTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/CommonStockAndRelatedMattersTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/EarningsPerCommonShareTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/DerivativeInstrumentsAndHedgingActivitiesTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/FairValueMeasurementsTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/SupplementalCashFlowInformationTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/SegmentInformationTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/BasisOfPresentationDetails">
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_ReclassificationLineItems" xlink:label="ReclassificationLineItems" xlink:title="ReclassificationLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PriorPeriodReclassificationAdjustment" xlink:label="PriorPeriodReclassificationAdjustment" xlink:title="PriorPeriodReclassificationAdjustment" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ReclassificationLineItems" xlink:to="PriorPeriodReclassificationAdjustment" xlink:title="definition: ReclassificationLineItems to PriorPeriodReclassificationAdjustment" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_RevisedLineItemsConsolidatedStatementOfCashFlowsAbstract" xlink:label="RevisedLineItemsConsolidatedStatementOfCashFlowsAbstract" xlink:title="RevisedLineItemsConsolidatedStatementOfCashFlowsAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ReclassificationLineItems" xlink:to="RevisedLineItemsConsolidatedStatementOfCashFlowsAbstract" xlink:title="definition: ReclassificationLineItems to RevisedLineItemsConsolidatedStatementOfCashFlowsAbstract" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInOperatingActivitiesAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ReclassificationLineItems" xlink:to="NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:title="definition: ReclassificationLineItems to NetCashProvidedByUsedInOperatingActivitiesAbstract" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInInvestingActivitiesAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ReclassificationLineItems" xlink:to="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:title="definition: ReclassificationLineItems to NetCashProvidedByUsedInInvestingActivitiesAbstract" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="PaymentsToAcquirePropertyPlantAndEquipment" xlink:title="PaymentsToAcquirePropertyPlantAndEquipment" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ReclassificationLineItems" xlink:to="PaymentsToAcquirePropertyPlantAndEquipment" xlink:title="definition: ReclassificationLineItems to PaymentsToAcquirePropertyPlantAndEquipment" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="NetCashProvidedByUsedInInvestingActivities" xlink:title="NetCashProvidedByUsedInInvestingActivities" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ReclassificationLineItems" xlink:to="NetCashProvidedByUsedInInvestingActivities" xlink:title="definition: ReclassificationLineItems to NetCashProvidedByUsedInInvestingActivities" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:title="IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ReclassificationLineItems" xlink:to="IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:title="definition: ReclassificationLineItems to IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="NetCashProvidedByUsedInOperatingActivities" xlink:title="NetCashProvidedByUsedInOperatingActivities" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ReclassificationLineItems" xlink:to="NetCashProvidedByUsedInOperatingActivities" xlink:title="definition: ReclassificationLineItems to NetCashProvidedByUsedInOperatingActivities" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_ReclassificationTable" xlink:label="ReclassificationTable" xlink:title="ReclassificationTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="ReclassificationLineItems" xlink:to="ReclassificationTable" xlink:title="definition: ReclassificationLineItems to ReclassificationTable" order="9.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ReclassificationTable" xlink:to="StatementScenarioAxis" xlink:title="definition: ReclassificationTable to StatementScenarioAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain" xlink:title="definition: StatementScenarioAxis to ScenarioUnspecifiedDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain_2" xlink:title="ScenarioUnspecifiedDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain_2" xlink:title="definition: StatementScenarioAxis to ScenarioUnspecifiedDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioPreviouslyReportedMember" xlink:title="definition: ScenarioUnspecifiedDomain to ScenarioPreviouslyReportedMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:label="RestatementAdjustmentMember" xlink:title="RestatementAdjustmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScenarioUnspecifiedDomain" xlink:to="RestatementAdjustmentMember" xlink:title="definition: ScenarioUnspecifiedDomain to RestatementAdjustmentMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_RevisedAdjustmentMember" xlink:label="RevisedAdjustmentMember" xlink:title="RevisedAdjustmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScenarioUnspecifiedDomain" xlink:to="RevisedAdjustmentMember" xlink:title="definition: ScenarioUnspecifiedDomain to RevisedAdjustmentMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="RelatedPartyTransactionLineItems" xlink:title="RelatedPartyTransactionLineItems" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_PartnershipOwnershipDisclosureAbstract" xlink:label="PartnershipOwnershipDisclosureAbstract" xlink:title="PartnershipOwnershipDisclosureAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RelatedPartyTransactionLineItems" xlink:to="PartnershipOwnershipDisclosureAbstract" xlink:title="definition: RelatedPartyTransactionLineItems to PartnershipOwnershipDisclosureAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" xlink:label="LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" xlink:title="LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RelatedPartyTransactionLineItems" xlink:to="LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" xlink:title="definition: RelatedPartyTransactionLineItems to LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_GeneralPartnerSInterestInPartnership" xlink:label="GeneralPartnerSInterestInPartnership" xlink:title="GeneralPartnerSInterestInPartnership" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RelatedPartyTransactionLineItems" xlink:to="GeneralPartnerSInterestInPartnership" xlink:title="definition: RelatedPartyTransactionLineItems to GeneralPartnerSInterestInPartnership" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_NumberOfPartnershipCommonUnitsOwned" xlink:label="NumberOfPartnershipCommonUnitsOwned" xlink:title="NumberOfPartnershipCommonUnitsOwned" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RelatedPartyTransactionLineItems" xlink:to="NumberOfPartnershipCommonUnitsOwned" xlink:title="definition: RelatedPartyTransactionLineItems to NumberOfPartnershipCommonUnitsOwned" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:title="ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="RelatedPartyTransactionLineItems" xlink:to="ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:title="definition: RelatedPartyTransactionLineItems to ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" order="5.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="RelatedPartyTransactionsByRelatedPartyAxis" xlink:title="RelatedPartyTransactionsByRelatedPartyAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="RelatedPartyTransactionsByRelatedPartyAxis" xlink:title="definition: ScheduleOfRelatedPartyTransactionsByRelatedPartyTable to RelatedPartyTransactionsByRelatedPartyAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="RelatedPartyDomain" xlink:title="RelatedPartyDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="RelatedPartyDomain" xlink:title="definition: RelatedPartyTransactionsByRelatedPartyAxis to RelatedPartyDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="RelatedPartyDomain_2" xlink:title="RelatedPartyDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="RelatedPartyDomain_2" xlink:title="definition: RelatedPartyTransactionsByRelatedPartyAxis to RelatedPartyDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LimitedPartnerMember" xlink:label="LimitedPartnerMember" xlink:title="LimitedPartnerMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RelatedPartyDomain" xlink:to="LimitedPartnerMember" xlink:title="definition: RelatedPartyDomain to LimitedPartnerMember" order="1.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/InventoriesDetails" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/PropertyPlantAndEquipmentAndIntangibleAssetsDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="FiniteLivedIntangibleAssetsLineItems" xlink:title="FiniteLivedIntangibleAssetsLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="FiniteLivedIntangibleAssetUsefulLife" xlink:title="FiniteLivedIntangibleAssetUsefulLife" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="FiniteLivedIntangibleAssetUsefulLife" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to FiniteLivedIntangibleAssetUsefulLife" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:label="ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:title="ScheduleOfFiniteLivedIntangibleAssetsTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to ScheduleOfFiniteLivedIntangibleAssetsTable" order="2.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:title="FiniteLivedIntangibleAssetsByMajorClassAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:to="FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:title="definition: ScheduleOfFiniteLivedIntangibleAssetsTable to FiniteLivedIntangibleAssetsByMajorClassAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:title="FiniteLivedIntangibleAssetsMajorClassNameDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:title="definition: FiniteLivedIntangibleAssetsByMajorClassAxis to FiniteLivedIntangibleAssetsMajorClassNameDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="FiniteLivedIntangibleAssetsMajorClassNameDomain_2" xlink:title="FiniteLivedIntangibleAssetsMajorClassNameDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="FiniteLivedIntangibleAssetsMajorClassNameDomain_2" xlink:title="definition: FiniteLivedIntangibleAssetsByMajorClassAxis to FiniteLivedIntangibleAssetsMajorClassNameDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_IntangibleAssetsCustomerContractsAndCustomerRelationshipsMember" xlink:label="IntangibleAssetsCustomerContractsAndCustomerRelationshipsMember" xlink:title="IntangibleAssetsCustomerContractsAndCustomerRelationshipsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="IntangibleAssetsCustomerContractsAndCustomerRelationshipsMember" xlink:title="definition: FiniteLivedIntangibleAssetsMajorClassNameDomain to IntangibleAssetsCustomerContractsAndCustomerRelationshipsMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="PropertyPlantAndEquipmentLineItems" xlink:title="PropertyPlantAndEquipmentLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="PropertyPlantAndEquipmentGross" xlink:title="PropertyPlantAndEquipmentGross" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PropertyPlantAndEquipmentLineItems" xlink:to="PropertyPlantAndEquipmentGross" xlink:title="definition: PropertyPlantAndEquipmentLineItems to PropertyPlantAndEquipmentGross" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:title="AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PropertyPlantAndEquipmentLineItems" xlink:to="AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:title="definition: PropertyPlantAndEquipmentLineItems to AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="PropertyPlantAndEquipmentNet" xlink:title="PropertyPlantAndEquipmentNet" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PropertyPlantAndEquipmentLineItems" xlink:to="PropertyPlantAndEquipmentNet" xlink:title="definition: PropertyPlantAndEquipmentLineItems to PropertyPlantAndEquipmentNet" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="FiniteLivedIntangibleAssetsGross" xlink:title="FiniteLivedIntangibleAssetsGross" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PropertyPlantAndEquipmentLineItems" xlink:to="FiniteLivedIntangibleAssetsGross" xlink:title="definition: PropertyPlantAndEquipmentLineItems to FiniteLivedIntangibleAssetsGross" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:title="FiniteLivedIntangibleAssetsAccumulatedAmortization" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PropertyPlantAndEquipmentLineItems" xlink:to="FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:title="definition: PropertyPlantAndEquipmentLineItems to FiniteLivedIntangibleAssetsAccumulatedAmortization" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="FiniteLivedIntangibleAssetsNet" xlink:title="FiniteLivedIntangibleAssetsNet" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PropertyPlantAndEquipmentLineItems" xlink:to="FiniteLivedIntangibleAssetsNet" xlink:title="definition: PropertyPlantAndEquipmentLineItems to FiniteLivedIntangibleAssetsNet" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="PropertyPlantAndEquipmentUsefulLife" xlink:title="PropertyPlantAndEquipmentUsefulLife" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PropertyPlantAndEquipmentLineItems" xlink:to="PropertyPlantAndEquipmentUsefulLife" xlink:title="definition: PropertyPlantAndEquipmentLineItems to PropertyPlantAndEquipmentUsefulLife" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="ScheduleOfPropertyPlantAndEquipmentTable" xlink:title="ScheduleOfPropertyPlantAndEquipmentTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="PropertyPlantAndEquipmentLineItems" xlink:to="ScheduleOfPropertyPlantAndEquipmentTable" xlink:title="definition: PropertyPlantAndEquipmentLineItems to ScheduleOfPropertyPlantAndEquipmentTable" order="8.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="LegalEntityAxis" xlink:title="definition: ScheduleOfPropertyPlantAndEquipmentTable to LegalEntityAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" xlink:title="definition: LegalEntityAxis to EntityDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain_2" xlink:title="EntityDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="LegalEntityAxis" xlink:to="EntityDomain_2" xlink:title="definition: LegalEntityAxis to EntityDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TargaResourcesPartnersLpMember" xlink:label="TargaResourcesPartnersLpMember" xlink:title="TargaResourcesPartnersLpMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="TargaResourcesPartnersLpMember" xlink:title="definition: EntityDomain to TargaResourcesPartnersLpMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TrcNonPartnershipMember" xlink:label="TrcNonPartnershipMember" xlink:title="TrcNonPartnershipMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="TrcNonPartnershipMember" xlink:title="definition: EntityDomain to TrcNonPartnershipMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_ParentCompanyExcludingPartnershipMember" xlink:label="ParentCompanyExcludingPartnershipMember" xlink:title="ParentCompanyExcludingPartnershipMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="ParentCompanyExcludingPartnershipMember" xlink:title="definition: EntityDomain to ParentCompanyExcludingPartnershipMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="PropertyPlantAndEquipmentByTypeAxis" xlink:title="PropertyPlantAndEquipmentByTypeAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="PropertyPlantAndEquipmentByTypeAxis" xlink:title="definition: ScheduleOfPropertyPlantAndEquipmentTable to PropertyPlantAndEquipmentByTypeAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="PropertyPlantAndEquipmentTypeDomain" xlink:title="PropertyPlantAndEquipmentTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="PropertyPlantAndEquipmentByTypeAxis" xlink:to="PropertyPlantAndEquipmentTypeDomain" xlink:title="definition: PropertyPlantAndEquipmentByTypeAxis to PropertyPlantAndEquipmentTypeDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="PropertyPlantAndEquipmentTypeDomain_2" xlink:title="PropertyPlantAndEquipmentTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="PropertyPlantAndEquipmentByTypeAxis" xlink:to="PropertyPlantAndEquipmentTypeDomain_2" xlink:title="definition: PropertyPlantAndEquipmentByTypeAxis to PropertyPlantAndEquipmentTypeDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GasGatheringAndProcessingEquipmentMember" xlink:label="GasGatheringAndProcessingEquipmentMember" xlink:title="GasGatheringAndProcessingEquipmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PropertyPlantAndEquipmentTypeDomain" xlink:to="GasGatheringAndProcessingEquipmentMember" xlink:title="definition: PropertyPlantAndEquipmentTypeDomain to GasGatheringAndProcessingEquipmentMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RefiningEquipmentMember" xlink:label="RefiningEquipmentMember" xlink:title="RefiningEquipmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PropertyPlantAndEquipmentTypeDomain" xlink:to="RefiningEquipmentMember" xlink:title="definition: PropertyPlantAndEquipmentTypeDomain to RefiningEquipmentMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GasTransmissionAndDistributionEquipmentMember" xlink:label="GasTransmissionAndDistributionEquipmentMember" xlink:title="GasTransmissionAndDistributionEquipmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PropertyPlantAndEquipmentTypeDomain" xlink:to="GasTransmissionAndDistributionEquipmentMember" xlink:title="definition: PropertyPlantAndEquipmentTypeDomain to GasTransmissionAndDistributionEquipmentMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TransportationEquipmentMember" xlink:label="TransportationEquipmentMember" xlink:title="TransportationEquipmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PropertyPlantAndEquipmentTypeDomain" xlink:to="TransportationEquipmentMember" xlink:title="definition: PropertyPlantAndEquipmentTypeDomain to TransportationEquipmentMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember" xlink:label="OtherCapitalizedPropertyPlantAndEquipmentMember" xlink:title="OtherCapitalizedPropertyPlantAndEquipmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PropertyPlantAndEquipmentTypeDomain" xlink:to="OtherCapitalizedPropertyPlantAndEquipmentMember" xlink:title="definition: PropertyPlantAndEquipmentTypeDomain to OtherCapitalizedPropertyPlantAndEquipmentMember" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LandMember" xlink:label="LandMember" xlink:title="LandMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PropertyPlantAndEquipmentTypeDomain" xlink:to="LandMember" xlink:title="definition: PropertyPlantAndEquipmentTypeDomain to LandMember" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConstructionInProgressMember" xlink:label="ConstructionInProgressMember" xlink:title="ConstructionInProgressMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PropertyPlantAndEquipmentTypeDomain" xlink:to="ConstructionInProgressMember" xlink:title="definition: PropertyPlantAndEquipmentTypeDomain to ConstructionInProgressMember" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeAxis" xlink:label="RangeAxis" xlink:title="RangeAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="RangeAxis" xlink:title="definition: ScheduleOfPropertyPlantAndEquipmentTable to RangeAxis" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeMember" xlink:label="RangeMember" xlink:title="RangeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="RangeAxis" xlink:to="RangeMember" xlink:title="definition: RangeAxis to RangeMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeMember" xlink:label="RangeMember_2" xlink:title="RangeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="RangeAxis" xlink:to="RangeMember_2" xlink:title="definition: RangeAxis to RangeMember_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinimumMember" xlink:label="MinimumMember" xlink:title="MinimumMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RangeMember" xlink:to="MinimumMember" xlink:title="definition: RangeMember to MinimumMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MaximumMember" xlink:label="MaximumMember" xlink:title="MaximumMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RangeMember" xlink:to="MaximumMember" xlink:title="definition: RangeMember to MaximumMember" order="2.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/AssetRetirementObligationsDetails" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/InvestmentInUnconsolidatedAffiliateDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="ScheduleOfEquityMethodInvestmentsLineItems" xlink:title="ScheduleOfEquityMethodInvestmentsLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="EquityMethodInvestmentOwnershipPercentage" xlink:title="EquityMethodInvestmentOwnershipPercentage" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="EquityMethodInvestmentOwnershipPercentage" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to EquityMethodInvestmentOwnershipPercentage" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="EquityMethodInvestments" xlink:title="EquityMethodInvestments" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="EquityMethodInvestments" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to EquityMethodInvestments" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="IncomeLossFromEquityMethodInvestments" xlink:title="IncomeLossFromEquityMethodInvestments" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="IncomeLossFromEquityMethodInvestments" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to IncomeLossFromEquityMethodInvestments" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashDividendsPaidToParentCompanyByUnconsolidatedSubsidiaries" xlink:label="CashDividendsPaidToParentCompanyByUnconsolidatedSubsidiaries" xlink:title="CashDividendsPaidToParentCompanyByUnconsolidatedSubsidiaries" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="CashDividendsPaidToParentCompanyByUnconsolidatedSubsidiaries" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to CashDividendsPaidToParentCompanyByUnconsolidatedSubsidiaries" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="ScheduleOfEquityMethodInvestmentsTable" xlink:title="ScheduleOfEquityMethodInvestmentsTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="ScheduleOfEquityMethodInvestmentsTable" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to ScheduleOfEquityMethodInvestmentsTable" order="5.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="RelatedPartyTransactionsByRelatedPartyAxis" xlink:title="RelatedPartyTransactionsByRelatedPartyAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfEquityMethodInvestmentsTable" xlink:to="RelatedPartyTransactionsByRelatedPartyAxis" xlink:title="definition: ScheduleOfEquityMethodInvestmentsTable to RelatedPartyTransactionsByRelatedPartyAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="RelatedPartyDomain" xlink:title="RelatedPartyDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="RelatedPartyDomain" xlink:title="definition: RelatedPartyTransactionsByRelatedPartyAxis to RelatedPartyDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="RelatedPartyDomain_2" xlink:title="RelatedPartyDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="RelatedPartyDomain_2" xlink:title="definition: RelatedPartyTransactionsByRelatedPartyAxis to RelatedPartyDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MajorityOwnedSubsidiaryUnconsolidatedMember" xlink:label="MajorityOwnedSubsidiaryUnconsolidatedMember" xlink:title="MajorityOwnedSubsidiaryUnconsolidatedMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RelatedPartyDomain" xlink:to="MajorityOwnedSubsidiaryUnconsolidatedMember" xlink:title="definition: RelatedPartyDomain to MajorityOwnedSubsidiaryUnconsolidatedMember" order="1.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/AccountsPayableAndAccruedLiabilitiesDetails" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/DebtObligationsDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="DebtInstrumentLineItems" xlink:title="DebtInstrumentLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="LongTermDebtNoncurrent" xlink:title="LongTermDebtNoncurrent" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentLineItems" xlink:to="LongTermDebtNoncurrent" xlink:title="definition: DebtInstrumentLineItems to LongTermDebtNoncurrent" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscount" xlink:label="DebtInstrumentUnamortizedDiscount" xlink:title="DebtInstrumentUnamortizedDiscount" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentLineItems" xlink:to="DebtInstrumentUnamortizedDiscount" xlink:title="definition: DebtInstrumentLineItems to DebtInstrumentUnamortizedDiscount" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="DebtInstrumentInterestRateStatedPercentage" xlink:title="DebtInstrumentInterestRateStatedPercentage" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentLineItems" xlink:to="DebtInstrumentInterestRateStatedPercentage" xlink:title="definition: DebtInstrumentLineItems to DebtInstrumentInterestRateStatedPercentage" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="DebtInstrumentMaturityDate" xlink:title="DebtInstrumentMaturityDate" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentLineItems" xlink:to="DebtInstrumentMaturityDate" xlink:title="definition: DebtInstrumentLineItems to DebtInstrumentMaturityDate" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:label="LettersOfCreditOutstandingAmount" xlink:title="LettersOfCreditOutstandingAmount" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentLineItems" xlink:to="LettersOfCreditOutstandingAmount" xlink:title="definition: DebtInstrumentLineItems to LettersOfCreditOutstandingAmount" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="LineOfCreditFacilityMaximumBorrowingCapacity" xlink:title="LineOfCreditFacilityMaximumBorrowingCapacity" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentLineItems" xlink:to="LineOfCreditFacilityMaximumBorrowingCapacity" xlink:title="definition: DebtInstrumentLineItems to LineOfCreditFacilityMaximumBorrowingCapacity" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:label="LineOfCreditFacilityRemainingBorrowingCapacity" xlink:title="LineOfCreditFacilityRemainingBorrowingCapacity" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentLineItems" xlink:to="LineOfCreditFacilityRemainingBorrowingCapacity" xlink:title="definition: DebtInstrumentLineItems to LineOfCreditFacilityRemainingBorrowingCapacity" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentageAbstract" xlink:label="DebtInstrumentInterestRateEffectivePercentageAbstract" xlink:title="DebtInstrumentInterestRateEffectivePercentageAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentLineItems" xlink:to="DebtInstrumentInterestRateEffectivePercentageAbstract" xlink:title="definition: DebtInstrumentLineItems to DebtInstrumentInterestRateEffectivePercentageAbstract" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum" xlink:label="DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum" xlink:title="DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentLineItems" xlink:to="DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum" xlink:title="definition: DebtInstrumentLineItems to DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum" order="9.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:label="DebtInstrumentInterestRateEffectivePercentage" xlink:title="DebtInstrumentInterestRateEffectivePercentage" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentLineItems" xlink:to="DebtInstrumentInterestRateEffectivePercentage" xlink:title="definition: DebtInstrumentLineItems to DebtInstrumentInterestRateEffectivePercentage" order="10.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum" xlink:label="DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum" xlink:title="DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentLineItems" xlink:to="DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum" xlink:title="definition: DebtInstrumentLineItems to DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum" order="11.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtWeightedAverageInterestRate" xlink:label="DebtWeightedAverageInterestRate" xlink:title="DebtWeightedAverageInterestRate" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentLineItems" xlink:to="DebtWeightedAverageInterestRate" xlink:title="definition: DebtInstrumentLineItems to DebtWeightedAverageInterestRate" order="12.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="DebtInstrumentTable" xlink:title="DebtInstrumentTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="DebtInstrumentLineItems" xlink:to="DebtInstrumentTable" xlink:title="definition: DebtInstrumentLineItems to DebtInstrumentTable" order="13.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="DebtInstrumentTable" xlink:to="LegalEntityAxis" xlink:title="definition: DebtInstrumentTable to LegalEntityAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" xlink:title="definition: LegalEntityAxis to EntityDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain_2" xlink:title="EntityDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="LegalEntityAxis" xlink:to="EntityDomain_2" xlink:title="definition: LegalEntityAxis to EntityDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TargaResourcesPartnersLpMember" xlink:label="TargaResourcesPartnersLpMember" xlink:title="TargaResourcesPartnersLpMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="TargaResourcesPartnersLpMember" xlink:title="definition: EntityDomain to TargaResourcesPartnersLpMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_ParentCompanyExcludingPartnershipMember" xlink:label="ParentCompanyExcludingPartnershipMember" xlink:title="ParentCompanyExcludingPartnershipMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="ParentCompanyExcludingPartnershipMember" xlink:title="definition: EntityDomain to ParentCompanyExcludingPartnershipMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="LongtermDebtTypeAxis" xlink:title="LongtermDebtTypeAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="DebtInstrumentTable" xlink:to="LongtermDebtTypeAxis" xlink:title="definition: DebtInstrumentTable to LongtermDebtTypeAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="LongtermDebtTypeDomain" xlink:title="LongtermDebtTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="LongtermDebtTypeAxis" xlink:to="LongtermDebtTypeDomain" xlink:title="definition: LongtermDebtTypeAxis to LongtermDebtTypeDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="LongtermDebtTypeDomain_2" xlink:title="LongtermDebtTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="LongtermDebtTypeAxis" xlink:to="LongtermDebtTypeDomain_2" xlink:title="definition: LongtermDebtTypeAxis to LongtermDebtTypeDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="RevolvingCreditFacilityMember" xlink:title="RevolvingCreditFacilityMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LongtermDebtTypeDomain" xlink:to="RevolvingCreditFacilityMember" xlink:title="definition: LongtermDebtTypeDomain to RevolvingCreditFacilityMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnsecuredDebtMember" xlink:label="UnsecuredDebtMember" xlink:title="UnsecuredDebtMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LongtermDebtTypeDomain" xlink:to="UnsecuredDebtMember" xlink:title="definition: LongtermDebtTypeDomain to UnsecuredDebtMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_AccountsReceivableSecuritizationFacilityMember" xlink:label="AccountsReceivableSecuritizationFacilityMember" xlink:title="AccountsReceivableSecuritizationFacilityMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LongtermDebtTypeDomain" xlink:to="AccountsReceivableSecuritizationFacilityMember" xlink:title="definition: LongtermDebtTypeDomain to AccountsReceivableSecuritizationFacilityMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="DebtInstrumentAxis" xlink:title="DebtInstrumentAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="DebtInstrumentTable" xlink:to="DebtInstrumentAxis" xlink:title="definition: DebtInstrumentTable to DebtInstrumentAxis" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="DebtInstrumentNameDomain" xlink:title="DebtInstrumentNameDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="DebtInstrumentAxis" xlink:to="DebtInstrumentNameDomain" xlink:title="definition: DebtInstrumentAxis to DebtInstrumentNameDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="DebtInstrumentNameDomain_2" xlink:title="DebtInstrumentNameDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="DebtInstrumentAxis" xlink:to="DebtInstrumentNameDomain_2" xlink:title="definition: DebtInstrumentAxis to DebtInstrumentNameDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TrcSeniorSecuredRevolvingCreditFacilityDue2017Member" xlink:label="TrcSeniorSecuredRevolvingCreditFacilityDue2017Member" xlink:title="TrcSeniorSecuredRevolvingCreditFacilityDue2017Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentNameDomain" xlink:to="TrcSeniorSecuredRevolvingCreditFacilityDue2017Member" xlink:title="definition: DebtInstrumentNameDomain to TrcSeniorSecuredRevolvingCreditFacilityDue2017Member" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_PartnershipSSeniorSecuredCreditFacilityMember" xlink:label="PartnershipSSeniorSecuredCreditFacilityMember" xlink:title="PartnershipSSeniorSecuredCreditFacilityMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentNameDomain" xlink:to="PartnershipSSeniorSecuredCreditFacilityMember" xlink:title="definition: DebtInstrumentNameDomain to PartnershipSSeniorSecuredCreditFacilityMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_SeniorNotesDue2018Member" xlink:label="SeniorNotesDue2018Member" xlink:title="SeniorNotesDue2018Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentNameDomain" xlink:to="SeniorNotesDue2018Member" xlink:title="definition: DebtInstrumentNameDomain to SeniorNotesDue2018Member" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_SeniorNotesDue2021Member" xlink:label="SeniorNotesDue2021Member" xlink:title="SeniorNotesDue2021Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentNameDomain" xlink:to="SeniorNotesDue2021Member" xlink:title="definition: DebtInstrumentNameDomain to SeniorNotesDue2021Member" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_SeniorNotesDue2022Member" xlink:label="SeniorNotesDue2022Member" xlink:title="SeniorNotesDue2022Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentNameDomain" xlink:to="SeniorNotesDue2022Member" xlink:title="definition: DebtInstrumentNameDomain to SeniorNotesDue2022Member" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_SeniorUnsecuredNotesDue2023Member" xlink:label="SeniorUnsecuredNotesDue2023Member" xlink:title="SeniorUnsecuredNotesDue2023Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentNameDomain" xlink:to="SeniorUnsecuredNotesDue2023Member" xlink:title="definition: DebtInstrumentNameDomain to SeniorUnsecuredNotesDue2023Member" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_SeniorUnsecuredNotesDueMay2023Member" xlink:label="SeniorUnsecuredNotesDueMay2023Member" xlink:title="SeniorUnsecuredNotesDueMay2023Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentNameDomain" xlink:to="SeniorUnsecuredNotesDueMay2023Member" xlink:title="definition: DebtInstrumentNameDomain to SeniorUnsecuredNotesDueMay2023Member" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_PartnershipSAccountsReceivableSecuritizationFacilityMember" xlink:label="PartnershipSAccountsReceivableSecuritizationFacilityMember" xlink:title="PartnershipSAccountsReceivableSecuritizationFacilityMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentNameDomain" xlink:to="PartnershipSAccountsReceivableSecuritizationFacilityMember" xlink:title="definition: DebtInstrumentNameDomain to PartnershipSAccountsReceivableSecuritizationFacilityMember" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_SeniorUnsecuredNotesDue2017Member" xlink:label="SeniorUnsecuredNotesDue2017Member" xlink:title="SeniorUnsecuredNotesDue2017Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentNameDomain" xlink:to="SeniorUnsecuredNotesDue2017Member" xlink:title="definition: DebtInstrumentNameDomain to SeniorUnsecuredNotesDue2017Member" order="9.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/PartnershipUnitsAndRelatedMattersDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="ScheduleOfEquityMethodInvestmentsLineItems" xlink:title="ScheduleOfEquityMethodInvestmentsLineItems" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_PartnershipEquityAbstract" xlink:label="PartnershipEquityAbstract" xlink:title="PartnershipEquityAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="PartnershipEquityAbstract" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to PartnershipEquityAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PartnersCapitalAccountUnitsSoldInPublicOffering" xlink:label="PartnersCapitalAccountUnitsSoldInPublicOffering" xlink:title="PartnersCapitalAccountUnitsSoldInPublicOffering" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="PartnersCapitalAccountUnitsSoldInPublicOffering" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to PartnersCapitalAccountUnitsSoldInPublicOffering" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_NetProceedsFromIssuanceOfCommonLimitedPartnersUnits" xlink:label="NetProceedsFromIssuanceOfCommonLimitedPartnersUnits" xlink:title="NetProceedsFromIssuanceOfCommonLimitedPartnersUnits" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="NetProceedsFromIssuanceOfCommonLimitedPartnersUnits" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to NetProceedsFromIssuanceOfCommonLimitedPartnersUnits" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_ReceivablesFromIssuanceOfCommonUnits" xlink:label="ReceivablesFromIssuanceOfCommonUnits" xlink:title="ReceivablesFromIssuanceOfCommonUnits" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="ReceivablesFromIssuanceOfCommonUnits" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to ReceivablesFromIssuanceOfCommonUnits" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_GeneralPartnerContributedToMaintainGeneralPartnerOwnershipPercentage" xlink:label="GeneralPartnerContributedToMaintainGeneralPartnerOwnershipPercentage" xlink:title="GeneralPartnerContributedToMaintainGeneralPartnerOwnershipPercentage" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="GeneralPartnerContributedToMaintainGeneralPartnerOwnershipPercentage" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to GeneralPartnerContributedToMaintainGeneralPartnerOwnershipPercentage" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_ReceivablesFromContributionToMaintain2GeneralPartnerInterest" xlink:label="ReceivablesFromContributionToMaintain2GeneralPartnerInterest" xlink:title="ReceivablesFromContributionToMaintain2GeneralPartnerInterest" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="ReceivablesFromContributionToMaintain2GeneralPartnerInterest" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to ReceivablesFromContributionToMaintain2GeneralPartnerInterest" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" xlink:label="LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" xlink:title="LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_AggregateAmountOfDebtOrEquitySecuritiesAllowedUnderShelfAgreement" xlink:label="AggregateAmountOfDebtOrEquitySecuritiesAllowedUnderShelfAgreement" xlink:title="AggregateAmountOfDebtOrEquitySecuritiesAllowedUnderShelfAgreement" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="AggregateAmountOfDebtOrEquitySecuritiesAllowedUnderShelfAgreement" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to AggregateAmountOfDebtOrEquitySecuritiesAllowedUnderShelfAgreement" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_NumberOfDaysFromEndOfEachQuarterByWhenCashIsDistributedToUnitHolders" xlink:label="NumberOfDaysFromEndOfEachQuarterByWhenCashIsDistributedToUnitHolders" xlink:title="NumberOfDaysFromEndOfEachQuarterByWhenCashIsDistributedToUnitHolders" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="NumberOfDaysFromEndOfEachQuarterByWhenCashIsDistributedToUnitHolders" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to NumberOfDaysFromEndOfEachQuarterByWhenCashIsDistributedToUnitHolders" order="9.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DistributionMadeToLimitedPartnerDistributionDate" xlink:label="DistributionMadeToLimitedPartnerDistributionDate" xlink:title="DistributionMadeToLimitedPartnerDistributionDate" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="DistributionMadeToLimitedPartnerDistributionDate" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to DistributionMadeToLimitedPartnerDistributionDate" order="10.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DistributionMadeToLimitedPartnerCashDistributionsPaid" xlink:label="DistributionMadeToLimitedPartnerCashDistributionsPaid" xlink:title="DistributionMadeToLimitedPartnerCashDistributionsPaid" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="DistributionMadeToLimitedPartnerCashDistributionsPaid" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to DistributionMadeToLimitedPartnerCashDistributionsPaid" order="11.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncentiveDistributionDistributionPerYear" xlink:label="IncentiveDistributionDistributionPerYear" xlink:title="IncentiveDistributionDistributionPerYear" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="IncentiveDistributionDistributionPerYear" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to IncentiveDistributionDistributionPerYear" order="12.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GeneralPartnersCapitalAccountDistributionAmount" xlink:label="GeneralPartnersCapitalAccountDistributionAmount" xlink:title="GeneralPartnersCapitalAccountDistributionAmount" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="GeneralPartnersCapitalAccountDistributionAmount" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to GeneralPartnersCapitalAccountDistributionAmount" order="13.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PartnersCapitalAccountDistributions" xlink:label="PartnersCapitalAccountDistributions" xlink:title="PartnersCapitalAccountDistributions" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="PartnersCapitalAccountDistributions" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to PartnersCapitalAccountDistributions" order="14.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DividendOrDistributionToParent" xlink:label="DividendOrDistributionToParent" xlink:title="DividendOrDistributionToParent" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="DividendOrDistributionToParent" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to DividendOrDistributionToParent" order="15.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DistributionMadeToLimitedPartnerDistributionsPaidPerUnit" xlink:label="DistributionMadeToLimitedPartnerDistributionsPaidPerUnit" xlink:title="DistributionMadeToLimitedPartnerDistributionsPaidPerUnit" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="DistributionMadeToLimitedPartnerDistributionsPaidPerUnit" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to DistributionMadeToLimitedPartnerDistributionsPaidPerUnit" order="16.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="ScheduleOfEquityMethodInvestmentsTable" xlink:title="ScheduleOfEquityMethodInvestmentsTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="ScheduleOfEquityMethodInvestmentsTable" xlink:title="definition: ScheduleOfEquityMethodInvestmentsLineItems to ScheduleOfEquityMethodInvestmentsTable" order="17.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfEquityMethodInvestmentsTable" xlink:to="LegalEntityAxis" xlink:title="definition: ScheduleOfEquityMethodInvestmentsTable to LegalEntityAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" xlink:title="definition: LegalEntityAxis to EntityDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain_2" xlink:title="EntityDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="LegalEntityAxis" xlink:to="EntityDomain_2" xlink:title="definition: LegalEntityAxis to EntityDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_PermianAndStraddleSystemsMember" xlink:label="PermianAndStraddleSystemsMember" xlink:title="PermianAndStraddleSystemsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="PermianAndStraddleSystemsMember" xlink:title="definition: EntityDomain to PermianAndStraddleSystemsMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_VersadoSystemMember" xlink:label="VersadoSystemMember" xlink:title="VersadoSystemMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="VersadoSystemMember" xlink:title="definition: EntityDomain to VersadoSystemMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_VeniceEnergyServicesCompanyLlcMember" xlink:label="VeniceEnergyServicesCompanyLlcMember" xlink:title="VeniceEnergyServicesCompanyLlcMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="VeniceEnergyServicesCompanyLlcMember" xlink:title="definition: EntityDomain to VeniceEnergyServicesCompanyLlcMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TargaResourcesLpMember" xlink:label="TargaResourcesLpMember" xlink:title="TargaResourcesLpMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="TargaResourcesLpMember" xlink:title="definition: EntityDomain to TargaResourcesLpMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_InitialOfferingMember" xlink:label="InitialOfferingMember" xlink:title="InitialOfferingMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="InitialOfferingMember" xlink:title="definition: EntityDomain to InitialOfferingMember" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="DebtInstrumentAxis" xlink:title="DebtInstrumentAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfEquityMethodInvestmentsTable" xlink:to="DebtInstrumentAxis" xlink:title="definition: ScheduleOfEquityMethodInvestmentsTable to DebtInstrumentAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="DebtInstrumentNameDomain" xlink:title="DebtInstrumentNameDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="DebtInstrumentAxis" xlink:to="DebtInstrumentNameDomain" xlink:title="definition: DebtInstrumentAxis to DebtInstrumentNameDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="DebtInstrumentNameDomain_2" xlink:title="DebtInstrumentNameDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="DebtInstrumentAxis" xlink:to="DebtInstrumentNameDomain_2" xlink:title="definition: DebtInstrumentAxis to DebtInstrumentNameDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TriSeniorRevolvingCreditFacilityDue2014Member" xlink:label="TriSeniorRevolvingCreditFacilityDue2014Member" xlink:title="TriSeniorRevolvingCreditFacilityDue2014Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentNameDomain" xlink:to="TriSeniorRevolvingCreditFacilityDue2014Member" xlink:title="definition: DebtInstrumentNameDomain to TriSeniorRevolvingCreditFacilityDue2014Member" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TriSeniorRevolvingCreditFacilityDue2014TermLoanFacilityMember" xlink:label="TriSeniorRevolvingCreditFacilityDue2014TermLoanFacilityMember" xlink:title="TriSeniorRevolvingCreditFacilityDue2014TermLoanFacilityMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DebtInstrumentNameDomain" xlink:to="TriSeniorRevolvingCreditFacilityDue2014TermLoanFacilityMember" xlink:title="definition: DebtInstrumentNameDomain to TriSeniorRevolvingCreditFacilityDue2014TermLoanFacilityMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis" xlink:label="SubsidiarySaleOfStockAxis" xlink:title="SubsidiarySaleOfStockAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfEquityMethodInvestmentsTable" xlink:to="SubsidiarySaleOfStockAxis" xlink:title="definition: ScheduleOfEquityMethodInvestmentsTable to SubsidiarySaleOfStockAxis" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain" xlink:label="SaleOfStockNameOfTransactionDomain" xlink:title="SaleOfStockNameOfTransactionDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="SubsidiarySaleOfStockAxis" xlink:to="SaleOfStockNameOfTransactionDomain" xlink:title="definition: SubsidiarySaleOfStockAxis to SaleOfStockNameOfTransactionDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain" xlink:label="SaleOfStockNameOfTransactionDomain_2" xlink:title="SaleOfStockNameOfTransactionDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="SubsidiarySaleOfStockAxis" xlink:to="SaleOfStockNameOfTransactionDomain_2" xlink:title="definition: SubsidiarySaleOfStockAxis to SaleOfStockNameOfTransactionDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TwoThousandTwelveEquityDistributionAgreementMember" xlink:label="TwoThousandTwelveEquityDistributionAgreementMember" xlink:title="TwoThousandTwelveEquityDistributionAgreementMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SaleOfStockNameOfTransactionDomain" xlink:to="TwoThousandTwelveEquityDistributionAgreementMember" xlink:title="definition: SaleOfStockNameOfTransactionDomain to TwoThousandTwelveEquityDistributionAgreementMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TwoThousandThirteenEquityDistributionAgreementMember" xlink:label="TwoThousandThirteenEquityDistributionAgreementMember" xlink:title="TwoThousandThirteenEquityDistributionAgreementMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SaleOfStockNameOfTransactionDomain" xlink:to="TwoThousandThirteenEquityDistributionAgreementMember" xlink:title="definition: SaleOfStockNameOfTransactionDomain to TwoThousandThirteenEquityDistributionAgreementMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TwoThousandThirteenAugustEquityDistributionAgreementMember" xlink:label="TwoThousandThirteenAugustEquityDistributionAgreementMember" xlink:title="TwoThousandThirteenAugustEquityDistributionAgreementMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SaleOfStockNameOfTransactionDomain" xlink:to="TwoThousandThirteenAugustEquityDistributionAgreementMember" xlink:title="definition: SaleOfStockNameOfTransactionDomain to TwoThousandThirteenAugustEquityDistributionAgreementMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="SubsequentEventTypeAxis" xlink:title="SubsequentEventTypeAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfEquityMethodInvestmentsTable" xlink:to="SubsequentEventTypeAxis" xlink:title="definition: ScheduleOfEquityMethodInvestmentsTable to SubsequentEventTypeAxis" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="SubsequentEventTypeDomain" xlink:title="SubsequentEventTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="SubsequentEventTypeAxis" xlink:to="SubsequentEventTypeDomain" xlink:title="definition: SubsequentEventTypeAxis to SubsequentEventTypeDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="SubsequentEventTypeDomain_2" xlink:title="SubsequentEventTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="SubsequentEventTypeAxis" xlink:to="SubsequentEventTypeDomain_2" xlink:title="definition: SubsequentEventTypeAxis to SubsequentEventTypeDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="SubsequentEventMember" xlink:title="SubsequentEventMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SubsequentEventTypeDomain" xlink:to="SubsequentEventMember" xlink:title="definition: SubsequentEventTypeDomain to SubsequentEventMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_PartialPaymentReceiptMember" xlink:label="PartialPaymentReceiptMember" xlink:title="PartialPaymentReceiptMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SubsequentEventTypeDomain" xlink:to="PartialPaymentReceiptMember" xlink:title="definition: SubsequentEventTypeDomain to PartialPaymentReceiptMember" order="2.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/CommonStockAndRelatedMattersDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DividendsPayableLineItems" xlink:label="DividendsPayableLineItems" xlink:title="DividendsPayableLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DividendPayableDateToBePaidDayMonthAndYear" xlink:label="DividendPayableDateToBePaidDayMonthAndYear" xlink:title="DividendPayableDateToBePaidDayMonthAndYear" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DividendsPayableLineItems" xlink:to="DividendPayableDateToBePaidDayMonthAndYear" xlink:title="definition: DividendsPayableLineItems to DividendPayableDateToBePaidDayMonthAndYear" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DividendsCommonStockCash" xlink:label="DividendsCommonStockCash" xlink:title="DividendsCommonStockCash" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DividendsPayableLineItems" xlink:to="DividendsCommonStockCash" xlink:title="definition: DividendsPayableLineItems to DividendsCommonStockCash" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:label="DividendsPayableCurrentAndNoncurrent" xlink:title="DividendsPayableCurrentAndNoncurrent" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DividendsPayableLineItems" xlink:to="DividendsPayableCurrentAndNoncurrent" xlink:title="definition: DividendsPayableLineItems to DividendsPayableCurrentAndNoncurrent" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="PaymentsOfDividendsCommonStock" xlink:title="PaymentsOfDividendsCommonStock" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DividendsPayableLineItems" xlink:to="PaymentsOfDividendsCommonStock" xlink:title="definition: DividendsPayableLineItems to PaymentsOfDividendsCommonStock" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_AccruedDividends" xlink:label="AccruedDividends" xlink:title="AccruedDividends" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DividendsPayableLineItems" xlink:to="AccruedDividends" xlink:title="definition: DividendsPayableLineItems to AccruedDividends" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:label="CommonStockDividendsPerShareDeclared" xlink:title="CommonStockDividendsPerShareDeclared" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DividendsPayableLineItems" xlink:to="CommonStockDividendsPerShareDeclared" xlink:title="definition: DividendsPayableLineItems to CommonStockDividendsPerShareDeclared" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DividendsPayableTable" xlink:label="DividendsPayableTable" xlink:title="DividendsPayableTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="DividendsPayableLineItems" xlink:to="DividendsPayableTable" xlink:title="definition: DividendsPayableLineItems to DividendsPayableTable" order="7.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DividendsAxis" xlink:label="DividendsAxis" xlink:title="DividendsAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="DividendsPayableTable" xlink:to="DividendsAxis" xlink:title="definition: DividendsPayableTable to DividendsAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DividendsDomain" xlink:label="DividendsDomain" xlink:title="DividendsDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="DividendsAxis" xlink:to="DividendsDomain" xlink:title="definition: DividendsAxis to DividendsDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DividendsDomain" xlink:label="DividendsDomain_2" xlink:title="DividendsDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="DividendsAxis" xlink:to="DividendsDomain_2" xlink:title="definition: DividendsAxis to DividendsDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DividendDeclaredQ12014Member" xlink:label="DividendDeclaredQ12014Member" xlink:title="DividendDeclaredQ12014Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DividendsDomain" xlink:to="DividendDeclaredQ12014Member" xlink:title="definition: DividendsDomain to DividendDeclaredQ12014Member" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DividendDeclaredQ42013Member" xlink:label="DividendDeclaredQ42013Member" xlink:title="DividendDeclaredQ42013Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DividendsDomain" xlink:to="DividendDeclaredQ42013Member" xlink:title="definition: DividendsDomain to DividendDeclaredQ42013Member" order="2.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/EarningsPerCommonShareDetails" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/DerivativeInstrumentsAndHedgingActivitiesDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeLineItems" xlink:label="DerivativeLineItems" xlink:title="DerivativeLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure" xlink:label="DerivativeNonmonetaryNotionalAmountEnergyMeasure" xlink:title="DerivativeNonmonetaryNotionalAmountEnergyMeasure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeLineItems" xlink:to="DerivativeNonmonetaryNotionalAmountEnergyMeasure" xlink:title="definition: DerivativeLineItems to DerivativeNonmonetaryNotionalAmountEnergyMeasure" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeNonmonetaryNotionalAmountVolume" xlink:label="DerivativeNonmonetaryNotionalAmountVolume" xlink:title="DerivativeNonmonetaryNotionalAmountVolume" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeLineItems" xlink:to="DerivativeNonmonetaryNotionalAmountVolume" xlink:title="definition: DerivativeLineItems to DerivativeNonmonetaryNotionalAmountVolume" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeNet" xlink:label="DerivativeFairValueOfDerivativeNet" xlink:title="DerivativeFairValueOfDerivativeNet" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeLineItems" xlink:to="DerivativeFairValueOfDerivativeNet" xlink:title="definition: DerivativeLineItems to DerivativeFairValueOfDerivativeNet" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PriceRiskCashFlowHedgeUnrealizedGainLossToBeReclassifiedDuringNext12Months" xlink:label="PriceRiskCashFlowHedgeUnrealizedGainLossToBeReclassifiedDuringNext12Months" xlink:title="PriceRiskCashFlowHedgeUnrealizedGainLossToBeReclassifiedDuringNext12Months" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeLineItems" xlink:to="PriceRiskCashFlowHedgeUnrealizedGainLossToBeReclassifiedDuringNext12Months" xlink:title="definition: DerivativeLineItems to PriceRiskCashFlowHedgeUnrealizedGainLossToBeReclassifiedDuringNext12Months" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet" xlink:label="InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet" xlink:title="InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeLineItems" xlink:to="InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet" xlink:title="definition: DerivativeLineItems to InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeTable" xlink:label="DerivativeTable" xlink:title="DerivativeTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="DerivativeLineItems" xlink:to="DerivativeTable" xlink:title="definition: DerivativeLineItems to DerivativeTable" order="6.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_NotionalVolumesOfCommodityHedgesAxis" xlink:label="NotionalVolumesOfCommodityHedgesAxis" xlink:title="NotionalVolumesOfCommodityHedgesAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="DerivativeTable" xlink:to="NotionalVolumesOfCommodityHedgesAxis" xlink:title="definition: DerivativeTable to NotionalVolumesOfCommodityHedgesAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TypesAndDatesOfHedgesDomain" xlink:label="TypesAndDatesOfHedgesDomain" xlink:title="TypesAndDatesOfHedgesDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="NotionalVolumesOfCommodityHedgesAxis" xlink:to="TypesAndDatesOfHedgesDomain" xlink:title="definition: NotionalVolumesOfCommodityHedgesAxis to TypesAndDatesOfHedgesDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TypesAndDatesOfHedgesDomain" xlink:label="TypesAndDatesOfHedgesDomain_2" xlink:title="TypesAndDatesOfHedgesDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="NotionalVolumesOfCommodityHedgesAxis" xlink:to="TypesAndDatesOfHedgesDomain_2" xlink:title="definition: NotionalVolumesOfCommodityHedgesAxis to TypesAndDatesOfHedgesDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="InterestRateSwapMember" xlink:title="InterestRateSwapMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TypesAndDatesOfHedgesDomain" xlink:to="InterestRateSwapMember" xlink:title="definition: TypesAndDatesOfHedgesDomain to InterestRateSwapMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_InstrumentsPutsMemberMember" xlink:label="InstrumentsPutsMemberMember" xlink:title="InstrumentsPutsMemberMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TypesAndDatesOfHedgesDomain" xlink:to="InstrumentsPutsMemberMember" xlink:title="definition: TypesAndDatesOfHedgesDomain to InstrumentsPutsMemberMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CallOptionMember" xlink:label="CallOptionMember" xlink:title="CallOptionMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TypesAndDatesOfHedgesDomain" xlink:to="CallOptionMember" xlink:title="definition: TypesAndDatesOfHedgesDomain to CallOptionMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DerivativeExpirationYearAxis" xlink:label="DerivativeExpirationYearAxis" xlink:title="DerivativeExpirationYearAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="DerivativeTable" xlink:to="DerivativeExpirationYearAxis" xlink:title="definition: DerivativeTable to DerivativeExpirationYearAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DerivativeExpirationYearDomain" xlink:label="DerivativeExpirationYearDomain" xlink:title="DerivativeExpirationYearDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="DerivativeExpirationYearAxis" xlink:to="DerivativeExpirationYearDomain" xlink:title="definition: DerivativeExpirationYearAxis to DerivativeExpirationYearDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DerivativeExpirationYearDomain" xlink:label="DerivativeExpirationYearDomain_2" xlink:title="DerivativeExpirationYearDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="DerivativeExpirationYearAxis" xlink:to="DerivativeExpirationYearDomain_2" xlink:title="definition: DerivativeExpirationYearAxis to DerivativeExpirationYearDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_Year2013Member" xlink:label="Year2013Member" xlink:title="Year2013Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeExpirationYearDomain" xlink:to="Year2013Member" xlink:title="definition: DerivativeExpirationYearDomain to Year2013Member" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_Year2014Member" xlink:label="Year2014Member" xlink:title="Year2014Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeExpirationYearDomain" xlink:to="Year2014Member" xlink:title="definition: DerivativeExpirationYearDomain to Year2014Member" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_Year2015Member" xlink:label="Year2015Member" xlink:title="Year2015Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeExpirationYearDomain" xlink:to="Year2015Member" xlink:title="definition: DerivativeExpirationYearDomain to Year2015Member" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_Year2016Member" xlink:label="Year2016Member" xlink:title="Year2016Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeExpirationYearDomain" xlink:to="Year2016Member" xlink:title="definition: DerivativeExpirationYearDomain to Year2016Member" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TypeOfProductHedgedAxis" xlink:label="TypeOfProductHedgedAxis" xlink:title="TypeOfProductHedgedAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="DerivativeTable" xlink:to="TypeOfProductHedgedAxis" xlink:title="definition: DerivativeTable to TypeOfProductHedgedAxis" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TypeOfProductHedgedDomain" xlink:label="TypeOfProductHedgedDomain" xlink:title="TypeOfProductHedgedDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="TypeOfProductHedgedAxis" xlink:to="TypeOfProductHedgedDomain" xlink:title="definition: TypeOfProductHedgedAxis to TypeOfProductHedgedDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TypeOfProductHedgedDomain" xlink:label="TypeOfProductHedgedDomain_2" xlink:title="TypeOfProductHedgedDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="TypeOfProductHedgedAxis" xlink:to="TypeOfProductHedgedDomain_2" xlink:title="definition: TypeOfProductHedgedAxis to TypeOfProductHedgedDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NaturalGasReservesMember" xlink:label="NaturalGasReservesMember" xlink:title="NaturalGasReservesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TypeOfProductHedgedDomain" xlink:to="NaturalGasReservesMember" xlink:title="definition: TypeOfProductHedgedDomain to NaturalGasReservesMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NaturalGasLiquidsReservesMember" xlink:label="NaturalGasLiquidsReservesMember" xlink:title="NaturalGasLiquidsReservesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TypeOfProductHedgedDomain" xlink:to="NaturalGasLiquidsReservesMember" xlink:title="definition: TypeOfProductHedgedDomain to NaturalGasLiquidsReservesMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_CondensateMember" xlink:label="CondensateMember" xlink:title="CondensateMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TypeOfProductHedgedDomain" xlink:to="CondensateMember" xlink:title="definition: TypeOfProductHedgedDomain to CondensateMember" order="3.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/DerivativeInstrumentsAndHedgingActivitiesDerivativeInstrumentsAndHedgingActivitiesFairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="DerivativesFairValueLineItems" xlink:title="DerivativesFairValueLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeAssetsLiabilitiesAtFairValueNetByBalanceSheetClassificationAbstract" xlink:label="DerivativeAssetsLiabilitiesAtFairValueNetByBalanceSheetClassificationAbstract" xlink:title="DerivativeAssetsLiabilitiesAtFairValueNetByBalanceSheetClassificationAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesFairValueLineItems" xlink:to="DerivativeAssetsLiabilitiesAtFairValueNetByBalanceSheetClassificationAbstract" xlink:title="definition: DerivativesFairValueLineItems to DerivativeAssetsLiabilitiesAtFairValueNetByBalanceSheetClassificationAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_ProFormaImpactOfReportingDerivativesInConsolidatedBalanceSheetsAbstract" xlink:label="ProFormaImpactOfReportingDerivativesInConsolidatedBalanceSheetsAbstract" xlink:title="ProFormaImpactOfReportingDerivativesInConsolidatedBalanceSheetsAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesFairValueLineItems" xlink:to="ProFormaImpactOfReportingDerivativesInConsolidatedBalanceSheetsAbstract" xlink:title="definition: DerivativesFairValueLineItems to ProFormaImpactOfReportingDerivativesInConsolidatedBalanceSheetsAbstract" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeFairValueAmountOffsetAgainstCollateralNet" xlink:label="DerivativeFairValueAmountOffsetAgainstCollateralNet" xlink:title="DerivativeFairValueAmountOffsetAgainstCollateralNet" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesFairValueLineItems" xlink:to="DerivativeFairValueAmountOffsetAgainstCollateralNet" xlink:title="definition: DerivativesFairValueLineItems to DerivativeFairValueAmountOffsetAgainstCollateralNet" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral" xlink:label="DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral" xlink:title="DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesFairValueLineItems" xlink:to="DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral" xlink:title="definition: DerivativesFairValueLineItems to DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral" xlink:label="DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral" xlink:title="DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesFairValueLineItems" xlink:to="DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral" xlink:title="definition: DerivativesFairValueLineItems to DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeNet" xlink:label="DerivativeFairValueOfDerivativeNet" xlink:title="DerivativeFairValueOfDerivativeNet" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesFairValueLineItems" xlink:to="DerivativeFairValueOfDerivativeNet" xlink:title="definition: DerivativesFairValueLineItems to DerivativeFairValueOfDerivativeNet" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeAssetsAbstract" xlink:label="DerivativeAssetsAbstract" xlink:title="DerivativeAssetsAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesFairValueLineItems" xlink:to="DerivativeAssetsAbstract" xlink:title="definition: DerivativesFairValueLineItems to DerivativeAssetsAbstract" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeLiabilitiesAbstract" xlink:label="DerivativeLiabilitiesAbstract" xlink:title="DerivativeLiabilitiesAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesFairValueLineItems" xlink:to="DerivativeLiabilitiesAbstract" xlink:title="definition: DerivativesFairValueLineItems to DerivativeLiabilitiesAbstract" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeLiabilitiesCurrent" xlink:label="DerivativeLiabilitiesCurrent" xlink:title="DerivativeLiabilitiesCurrent" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesFairValueLineItems" xlink:to="DerivativeLiabilitiesCurrent" xlink:title="definition: DerivativesFairValueLineItems to DerivativeLiabilitiesCurrent" order="9.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeLiabilitiesNoncurrent" xlink:label="DerivativeLiabilitiesNoncurrent" xlink:title="DerivativeLiabilitiesNoncurrent" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesFairValueLineItems" xlink:to="DerivativeLiabilitiesNoncurrent" xlink:title="definition: DerivativesFairValueLineItems to DerivativeLiabilitiesNoncurrent" order="10.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:label="DerivativeLiabilities" xlink:title="DerivativeLiabilities" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesFairValueLineItems" xlink:to="DerivativeLiabilities" xlink:title="definition: DerivativesFairValueLineItems to DerivativeLiabilities" order="11.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeAssetsCurrent" xlink:label="DerivativeAssetsCurrent" xlink:title="DerivativeAssetsCurrent" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesFairValueLineItems" xlink:to="DerivativeAssetsCurrent" xlink:title="definition: DerivativesFairValueLineItems to DerivativeAssetsCurrent" order="12.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeAssetsNoncurrent" xlink:label="DerivativeAssetsNoncurrent" xlink:title="DerivativeAssetsNoncurrent" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesFairValueLineItems" xlink:to="DerivativeAssetsNoncurrent" xlink:title="definition: DerivativesFairValueLineItems to DerivativeAssetsNoncurrent" order="13.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="DerivativeAssets" xlink:title="DerivativeAssets" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesFairValueLineItems" xlink:to="DerivativeAssets" xlink:title="definition: DerivativesFairValueLineItems to DerivativeAssets" order="14.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:title="FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="DerivativesFairValueLineItems" xlink:to="FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:title="definition: DerivativesFairValueLineItems to FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" order="15.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="HedgingDesignationAxis" xlink:title="HedgingDesignationAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:to="HedgingDesignationAxis" xlink:title="definition: FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable to HedgingDesignationAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="HedgingDesignationDomain" xlink:title="HedgingDesignationDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="HedgingDesignationAxis" xlink:to="HedgingDesignationDomain" xlink:title="definition: HedgingDesignationAxis to HedgingDesignationDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="HedgingDesignationDomain_2" xlink:title="HedgingDesignationDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="HedgingDesignationAxis" xlink:to="HedgingDesignationDomain_2" xlink:title="definition: HedgingDesignationAxis to HedgingDesignationDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:label="DesignatedAsHedgingInstrumentMember" xlink:title="DesignatedAsHedgingInstrumentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="HedgingDesignationDomain" xlink:to="DesignatedAsHedgingInstrumentMember" xlink:title="definition: HedgingDesignationDomain to DesignatedAsHedgingInstrumentMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NondesignatedMember" xlink:label="NondesignatedMember" xlink:title="NondesignatedMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="HedgingDesignationDomain" xlink:to="NondesignatedMember" xlink:title="definition: HedgingDesignationDomain to NondesignatedMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="DerivativeInstrumentRiskAxis" xlink:title="DerivativeInstrumentRiskAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:to="DerivativeInstrumentRiskAxis" xlink:title="definition: FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable to DerivativeInstrumentRiskAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="DerivativeContractTypeDomain" xlink:title="DerivativeContractTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="DerivativeInstrumentRiskAxis" xlink:to="DerivativeContractTypeDomain" xlink:title="definition: DerivativeInstrumentRiskAxis to DerivativeContractTypeDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="DerivativeContractTypeDomain_2" xlink:title="DerivativeContractTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="DerivativeInstrumentRiskAxis" xlink:to="DerivativeContractTypeDomain_2" xlink:title="definition: DerivativeInstrumentRiskAxis to DerivativeContractTypeDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommodityContractMember" xlink:label="CommodityContractMember" xlink:title="CommodityContractMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeContractTypeDomain" xlink:to="CommodityContractMember" xlink:title="definition: DerivativeContractTypeDomain to CommodityContractMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="InterestRateSwapMember" xlink:title="InterestRateSwapMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeContractTypeDomain" xlink:to="InterestRateSwapMember" xlink:title="definition: DerivativeContractTypeDomain to InterestRateSwapMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DerivativeByPositionAxis" xlink:label="DerivativeByPositionAxis" xlink:title="DerivativeByPositionAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:to="DerivativeByPositionAxis" xlink:title="definition: FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable to DerivativeByPositionAxis" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DerivativeByPositionDomain" xlink:label="DerivativeByPositionDomain" xlink:title="DerivativeByPositionDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="DerivativeByPositionAxis" xlink:to="DerivativeByPositionDomain" xlink:title="definition: DerivativeByPositionAxis to DerivativeByPositionDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DerivativeByPositionDomain" xlink:label="DerivativeByPositionDomain_2" xlink:title="DerivativeByPositionDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="DerivativeByPositionAxis" xlink:to="DerivativeByPositionDomain_2" xlink:title="definition: DerivativeByPositionAxis to DerivativeByPositionDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_CurrentPositionMember" xlink:label="CurrentPositionMember" xlink:title="CurrentPositionMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeByPositionDomain" xlink:to="CurrentPositionMember" xlink:title="definition: DerivativeByPositionDomain to CurrentPositionMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_LongTermPositionMember" xlink:label="LongTermPositionMember" xlink:title="LongTermPositionMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeByPositionDomain" xlink:to="LongTermPositionMember" xlink:title="definition: DerivativeByPositionDomain to LongTermPositionMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="BalanceSheetLocationAxis" xlink:title="BalanceSheetLocationAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:to="BalanceSheetLocationAxis" xlink:title="definition: FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable to BalanceSheetLocationAxis" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="BalanceSheetLocationDomain" xlink:title="BalanceSheetLocationDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="BalanceSheetLocationAxis" xlink:to="BalanceSheetLocationDomain" xlink:title="definition: BalanceSheetLocationAxis to BalanceSheetLocationDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="BalanceSheetLocationDomain_2" xlink:title="BalanceSheetLocationDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="BalanceSheetLocationAxis" xlink:to="BalanceSheetLocationDomain_2" xlink:title="definition: BalanceSheetLocationAxis to BalanceSheetLocationDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_AssetPositionMember" xlink:label="AssetPositionMember" xlink:title="AssetPositionMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BalanceSheetLocationDomain" xlink:to="AssetPositionMember" xlink:title="definition: BalanceSheetLocationDomain to AssetPositionMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_LiabilityPositionMember" xlink:label="LiabilityPositionMember" xlink:title="LiabilityPositionMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BalanceSheetLocationDomain" xlink:to="LiabilityPositionMember" xlink:title="definition: BalanceSheetLocationDomain to LiabilityPositionMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DerivativesByPresentationAxis" xlink:label="DerivativesByPresentationAxis" xlink:title="DerivativesByPresentationAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:to="DerivativesByPresentationAxis" xlink:title="definition: FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable to DerivativesByPresentationAxis" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DerivativesByPresentationDomain" xlink:label="DerivativesByPresentationDomain" xlink:title="DerivativesByPresentationDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="DerivativesByPresentationAxis" xlink:to="DerivativesByPresentationDomain" xlink:title="definition: DerivativesByPresentationAxis to DerivativesByPresentationDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DerivativesByPresentationDomain" xlink:label="DerivativesByPresentationDomain_2" xlink:title="DerivativesByPresentationDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="DerivativesByPresentationAxis" xlink:to="DerivativesByPresentationDomain_2" xlink:title="definition: DerivativesByPresentationAxis to DerivativesByPresentationDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_GrossPresentationMember" xlink:label="GrossPresentationMember" xlink:title="GrossPresentationMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesByPresentationDomain" xlink:to="GrossPresentationMember" xlink:title="definition: DerivativesByPresentationDomain to GrossPresentationMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_ProFormaNetPresentationMember" xlink:label="ProFormaNetPresentationMember" xlink:title="ProFormaNetPresentationMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativesByPresentationDomain" xlink:to="ProFormaNetPresentationMember" xlink:title="definition: DerivativesByPresentationDomain to ProFormaNetPresentationMember" order="2.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/DerivativeInstrumentsAndHedgingActivitiesDerivativeInstrumentsAndHedgingActivitiesDerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:label="DerivativeInstrumentsGainLossLineItems" xlink:title="DerivativeInstrumentsGainLossLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeInstrumentsGainRecognizedInOtherComprehensiveIncomeEffectivePortion" xlink:label="DerivativeInstrumentsGainRecognizedInOtherComprehensiveIncomeEffectivePortion" xlink:title="DerivativeInstrumentsGainRecognizedInOtherComprehensiveIncomeEffectivePortion" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeInstrumentsGainLossLineItems" xlink:to="DerivativeInstrumentsGainRecognizedInOtherComprehensiveIncomeEffectivePortion" xlink:title="definition: DerivativeInstrumentsGainLossLineItems to DerivativeInstrumentsGainRecognizedInOtherComprehensiveIncomeEffectivePortion" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:label="DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:title="DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeInstrumentsGainLossLineItems" xlink:to="DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:title="definition: DerivativeInstrumentsGainLossLineItems to DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DeferredGainsLossesInAccumulatedOciBeforeTax" xlink:label="DeferredGainsLossesInAccumulatedOciBeforeTax" xlink:title="DeferredGainsLossesInAccumulatedOciBeforeTax" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeInstrumentsGainLossLineItems" xlink:to="DeferredGainsLossesInAccumulatedOciBeforeTax" xlink:title="definition: DerivativeInstrumentsGainLossLineItems to DeferredGainsLossesInAccumulatedOciBeforeTax" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DeferredGainsLossesInAccumulatedOciAfterTax" xlink:label="DeferredGainsLossesInAccumulatedOciAfterTax" xlink:title="DeferredGainsLossesInAccumulatedOciAfterTax" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeInstrumentsGainLossLineItems" xlink:to="DeferredGainsLossesInAccumulatedOciAfterTax" xlink:title="definition: DerivativeInstrumentsGainLossLineItems to DeferredGainsLossesInAccumulatedOciAfterTax" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:title="DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="DerivativeInstrumentsGainLossLineItems" xlink:to="DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:title="definition: DerivativeInstrumentsGainLossLineItems to DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" order="5.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="DerivativeInstrumentRiskAxis" xlink:title="DerivativeInstrumentRiskAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:to="DerivativeInstrumentRiskAxis" xlink:title="definition: DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable to DerivativeInstrumentRiskAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="DerivativeContractTypeDomain" xlink:title="DerivativeContractTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="DerivativeInstrumentRiskAxis" xlink:to="DerivativeContractTypeDomain" xlink:title="definition: DerivativeInstrumentRiskAxis to DerivativeContractTypeDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="DerivativeContractTypeDomain_2" xlink:title="DerivativeContractTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="DerivativeInstrumentRiskAxis" xlink:to="DerivativeContractTypeDomain_2" xlink:title="definition: DerivativeInstrumentRiskAxis to DerivativeContractTypeDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommodityContractMember" xlink:label="CommodityContractMember" xlink:title="CommodityContractMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeContractTypeDomain" xlink:to="CommodityContractMember" xlink:title="definition: DerivativeContractTypeDomain to CommodityContractMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="InterestRateSwapMember" xlink:title="InterestRateSwapMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeContractTypeDomain" xlink:to="InterestRateSwapMember" xlink:title="definition: DerivativeContractTypeDomain to InterestRateSwapMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestRateContractMember" xlink:label="InterestRateContractMember" xlink:title="InterestRateContractMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DerivativeContractTypeDomain" xlink:to="InterestRateContractMember" xlink:title="definition: DerivativeContractTypeDomain to InterestRateContractMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="IncomeStatementLocationAxis" xlink:title="IncomeStatementLocationAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:to="IncomeStatementLocationAxis" xlink:title="definition: DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable to IncomeStatementLocationAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="IncomeStatementLocationDomain" xlink:title="IncomeStatementLocationDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="IncomeStatementLocationAxis" xlink:to="IncomeStatementLocationDomain" xlink:title="definition: IncomeStatementLocationAxis to IncomeStatementLocationDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="IncomeStatementLocationDomain_2" xlink:title="IncomeStatementLocationDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="IncomeStatementLocationAxis" xlink:to="IncomeStatementLocationDomain_2" xlink:title="definition: IncomeStatementLocationAxis to IncomeStatementLocationDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SalesMember" xlink:label="SalesMember" xlink:title="SalesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IncomeStatementLocationDomain" xlink:to="SalesMember" xlink:title="definition: IncomeStatementLocationDomain to SalesMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestExpenseMember" xlink:label="InterestExpenseMember" xlink:title="InterestExpenseMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IncomeStatementLocationDomain" xlink:to="InterestExpenseMember" xlink:title="definition: IncomeStatementLocationDomain to InterestExpenseMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_OtherIncomeExpenseMember" xlink:label="OtherIncomeExpenseMember" xlink:title="OtherIncomeExpenseMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IncomeStatementLocationDomain" xlink:to="OtherIncomeExpenseMember" xlink:title="definition: IncomeStatementLocationDomain to OtherIncomeExpenseMember" order="3.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/FairValueMeasurementsDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:label="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:title="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:label="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:title="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:title="definition: FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems to FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:label="FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:title="FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:title="definition: FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems to FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" xlink:label="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" xlink:title="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" xlink:title="definition: FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems to FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:label="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:title="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:title="definition: FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems to FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" order="4.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueByLiabilityClassAxis" xlink:label="FairValueByLiabilityClassAxis" xlink:title="FairValueByLiabilityClassAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:to="FairValueByLiabilityClassAxis" xlink:title="definition: FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable to FairValueByLiabilityClassAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:label="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:title="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FairValueByLiabilityClassAxis" xlink:to="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:title="definition: FairValueByLiabilityClassAxis to FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:label="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_2" xlink:title="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FairValueByLiabilityClassAxis" xlink:to="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_2" xlink:title="definition: FairValueByLiabilityClassAxis to FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeFinancialInstrumentsAssetsMember" xlink:label="DerivativeFinancialInstrumentsAssetsMember" xlink:title="DerivativeFinancialInstrumentsAssetsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:to="DerivativeFinancialInstrumentsAssetsMember" xlink:title="definition: FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain to DerivativeFinancialInstrumentsAssetsMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember" xlink:label="DerivativeFinancialInstrumentsLiabilitiesMember" xlink:title="DerivativeFinancialInstrumentsLiabilitiesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:to="DerivativeFinancialInstrumentsLiabilitiesMember" xlink:title="definition: FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain to DerivativeFinancialInstrumentsLiabilitiesMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:title="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DerivativeFairValueCommodityPriceIncreases10PercentNetLiability" xlink:label="DerivativeFairValueCommodityPriceIncreases10PercentNetLiability" xlink:title="DerivativeFairValueCommodityPriceIncreases10PercentNetLiability" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="DerivativeFairValueCommodityPriceIncreases10PercentNetLiability" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to DerivativeFairValueCommodityPriceIncreases10PercentNetLiability" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DerivativeFairValueCommodityPriceDecreases10PercentNetAsset" xlink:label="DerivativeFairValueCommodityPriceDecreases10PercentNetAsset" xlink:title="DerivativeFairValueCommodityPriceDecreases10PercentNetAsset" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="DerivativeFairValueCommodityPriceDecreases10PercentNetAsset" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to DerivativeFairValueCommodityPriceDecreases10PercentNetAsset" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_NumberOfNaturalGasBasisSwapsCategorizedAsLevel3" xlink:label="NumberOfNaturalGasBasisSwapsCategorizedAsLevel3" xlink:title="NumberOfNaturalGasBasisSwapsCategorizedAsLevel3" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="NumberOfNaturalGasBasisSwapsCategorizedAsLevel3" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to NumberOfNaturalGasBasisSwapsCategorizedAsLevel3" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:title="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" order="4.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="FairValueByFairValueHierarchyLevelAxis" xlink:title="FairValueByFairValueHierarchyLevelAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="FairValueByFairValueHierarchyLevelAxis" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable to FairValueByFairValueHierarchyLevelAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="FairValueMeasurementsFairValueHierarchyDomain" xlink:title="FairValueMeasurementsFairValueHierarchyDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FairValueByFairValueHierarchyLevelAxis" xlink:to="FairValueMeasurementsFairValueHierarchyDomain" xlink:title="definition: FairValueByFairValueHierarchyLevelAxis to FairValueMeasurementsFairValueHierarchyDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="FairValueMeasurementsFairValueHierarchyDomain_2" xlink:title="FairValueMeasurementsFairValueHierarchyDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FairValueByFairValueHierarchyLevelAxis" xlink:to="FairValueMeasurementsFairValueHierarchyDomain_2" xlink:title="definition: FairValueByFairValueHierarchyLevelAxis to FairValueMeasurementsFairValueHierarchyDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="FairValueInputsLevel1Member" xlink:title="FairValueInputsLevel1Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueMeasurementsFairValueHierarchyDomain" xlink:to="FairValueInputsLevel1Member" xlink:title="definition: FairValueMeasurementsFairValueHierarchyDomain to FairValueInputsLevel1Member" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="FairValueInputsLevel2Member" xlink:title="FairValueInputsLevel2Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueMeasurementsFairValueHierarchyDomain" xlink:to="FairValueInputsLevel2Member" xlink:title="definition: FairValueMeasurementsFairValueHierarchyDomain to FairValueInputsLevel2Member" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="FairValueInputsLevel3Member" xlink:title="FairValueInputsLevel3Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueMeasurementsFairValueHierarchyDomain" xlink:to="FairValueInputsLevel3Member" xlink:title="definition: FairValueMeasurementsFairValueHierarchyDomain to FairValueInputsLevel3Member" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:label="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:title="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PriceRiskCashFlowHedgeAssetAtFairValue" xlink:label="PriceRiskCashFlowHedgeAssetAtFairValue" xlink:title="PriceRiskCashFlowHedgeAssetAtFairValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="PriceRiskCashFlowHedgeAssetAtFairValue" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to PriceRiskCashFlowHedgeAssetAtFairValue" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PriceRiskCashFlowHedgeLiabilityAtFairValue" xlink:label="PriceRiskCashFlowHedgeLiabilityAtFairValue" xlink:title="PriceRiskCashFlowHedgeLiabilityAtFairValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="PriceRiskCashFlowHedgeLiabilityAtFairValue" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to PriceRiskCashFlowHedgeLiabilityAtFairValue" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_BadlandsContingentConsiderationLiabilitySeeNote4" xlink:label="BadlandsContingentConsiderationLiabilitySeeNote4" xlink:title="BadlandsContingentConsiderationLiabilitySeeNote4" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="BadlandsContingentConsiderationLiabilitySeeNote4" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to BadlandsContingentConsiderationLiabilitySeeNote4" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:label="CashAndCashEquivalentsFairValueDisclosure" xlink:title="CashAndCashEquivalentsFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="CashAndCashEquivalentsFairValueDisclosure" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to CashAndCashEquivalentsFairValueDisclosure" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TrcSeniorSecuredRevolvingCreditFacility" xlink:label="TrcSeniorSecuredRevolvingCreditFacility" xlink:title="TrcSeniorSecuredRevolvingCreditFacility" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="TrcSeniorSecuredRevolvingCreditFacility" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to TrcSeniorSecuredRevolvingCreditFacility" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LinesOfCreditFairValueDisclosure" xlink:label="LinesOfCreditFairValueDisclosure" xlink:title="LinesOfCreditFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="LinesOfCreditFairValueDisclosure" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to LinesOfCreditFairValueDisclosure" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_LinesOfCreditFairValueDisclosureHoldcoLoanFacility" xlink:label="LinesOfCreditFairValueDisclosureHoldcoLoanFacility" xlink:title="LinesOfCreditFairValueDisclosureHoldcoLoanFacility" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="LinesOfCreditFairValueDisclosureHoldcoLoanFacility" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to LinesOfCreditFairValueDisclosureHoldcoLoanFacility" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_AccountsReceivableSecuritizationFacilityFairValueDisclosure" xlink:label="AccountsReceivableSecuritizationFacilityFairValueDisclosure" xlink:title="AccountsReceivableSecuritizationFacilityFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="AccountsReceivableSecuritizationFacilityFairValueDisclosure" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to AccountsReceivableSecuritizationFacilityFairValueDisclosure" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTable" xlink:label="FairValueByBalanceSheetGroupingTable" xlink:title="FairValueByBalanceSheetGroupingTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="FairValueByBalanceSheetGroupingTable" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to FairValueByBalanceSheetGroupingTable" order="9.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="FairValueByMeasurementBasisAxis" xlink:title="FairValueByMeasurementBasisAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValueByBalanceSheetGroupingTable" xlink:to="FairValueByMeasurementBasisAxis" xlink:title="definition: FairValueByBalanceSheetGroupingTable to FairValueByMeasurementBasisAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="FairValueDisclosureItemAmountsDomain" xlink:title="FairValueDisclosureItemAmountsDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FairValueByMeasurementBasisAxis" xlink:to="FairValueDisclosureItemAmountsDomain" xlink:title="definition: FairValueByMeasurementBasisAxis to FairValueDisclosureItemAmountsDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="FairValueDisclosureItemAmountsDomain_2" xlink:title="FairValueDisclosureItemAmountsDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FairValueByMeasurementBasisAxis" xlink:to="FairValueDisclosureItemAmountsDomain_2" xlink:title="definition: FairValueByMeasurementBasisAxis to FairValueDisclosureItemAmountsDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="PortionAtFairValueFairValueDisclosureMember" xlink:title="PortionAtFairValueFairValueDisclosureMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueDisclosureItemAmountsDomain" xlink:to="PortionAtFairValueFairValueDisclosureMember" xlink:title="definition: FairValueDisclosureItemAmountsDomain to PortionAtFairValueFairValueDisclosureMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:label="CarryingReportedAmountFairValueDisclosureMember" xlink:title="CarryingReportedAmountFairValueDisclosureMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueDisclosureItemAmountsDomain" xlink:to="CarryingReportedAmountFairValueDisclosureMember" xlink:title="definition: FairValueDisclosureItemAmountsDomain to CarryingReportedAmountFairValueDisclosureMember" order="2.0" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValueByBalanceSheetGroupingTable" xlink:to="FairValueByFairValueHierarchyLevelAxis" xlink:title="definition: FairValueByBalanceSheetGroupingTable to FairValueByFairValueHierarchyLevelAxis" order="2.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/SupplementalCashFlowInformationDetails" />
  <link:definitionLink xlink:type="extended" xlink:role="http://targaresourcescorp.com/role/SegmentInformationDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="SegmentReportingInformationLineItems" xlink:title="SegmentReportingInformationLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RevenueMineralSales" xlink:label="RevenueMineralSales" xlink:title="RevenueMineralSales" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentReportingInformationLineItems" xlink:to="RevenueMineralSales" xlink:title="definition: SegmentReportingInformationLineItems to RevenueMineralSales" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NaturalGasMidstreamRevenue" xlink:label="NaturalGasMidstreamRevenue" xlink:title="NaturalGasMidstreamRevenue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentReportingInformationLineItems" xlink:to="NaturalGasMidstreamRevenue" xlink:title="definition: SegmentReportingInformationLineItems to NaturalGasMidstreamRevenue" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GasGatheringTransportationMarketingAndProcessingRevenue" xlink:label="GasGatheringTransportationMarketingAndProcessingRevenue" xlink:title="GasGatheringTransportationMarketingAndProcessingRevenue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentReportingInformationLineItems" xlink:to="GasGatheringTransportationMarketingAndProcessingRevenue" xlink:title="definition: SegmentReportingInformationLineItems to GasGatheringTransportationMarketingAndProcessingRevenue" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_OperatingMargin" xlink:label="OperatingMargin" xlink:title="OperatingMargin" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentReportingInformationLineItems" xlink:to="OperatingMargin" xlink:title="definition: SegmentReportingInformationLineItems to OperatingMargin" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Assets" xlink:label="Assets" xlink:title="Assets" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentReportingInformationLineItems" xlink:to="Assets" xlink:title="definition: SegmentReportingInformationLineItems to Assets" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_SegmentReportingInformationCapitalExpenditures" xlink:label="SegmentReportingInformationCapitalExpenditures" xlink:title="SegmentReportingInformationCapitalExpenditures" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentReportingInformationLineItems" xlink:to="SegmentReportingInformationCapitalExpenditures" xlink:title="definition: SegmentReportingInformationLineItems to SegmentReportingInformationCapitalExpenditures" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="DepreciationDepletionAndAmortization" xlink:title="DepreciationDepletionAndAmortization" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentReportingInformationLineItems" xlink:to="DepreciationDepletionAndAmortization" xlink:title="definition: SegmentReportingInformationLineItems to DepreciationDepletionAndAmortization" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="GeneralAndAdministrativeExpense" xlink:title="GeneralAndAdministrativeExpense" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentReportingInformationLineItems" xlink:to="GeneralAndAdministrativeExpense" xlink:title="definition: SegmentReportingInformationLineItems to GeneralAndAdministrativeExpense" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestExpense" xlink:label="InterestExpense" xlink:title="InterestExpense" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentReportingInformationLineItems" xlink:to="InterestExpense" xlink:title="definition: SegmentReportingInformationLineItems to InterestExpense" order="9.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherNonrecurringIncomeExpense" xlink:label="OtherNonrecurringIncomeExpense" xlink:title="OtherNonrecurringIncomeExpense" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentReportingInformationLineItems" xlink:to="OtherNonrecurringIncomeExpense" xlink:title="definition: SegmentReportingInformationLineItems to OtherNonrecurringIncomeExpense" order="10.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="IncomeTaxExpenseBenefit" xlink:title="IncomeTaxExpenseBenefit" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentReportingInformationLineItems" xlink:to="IncomeTaxExpenseBenefit" xlink:title="definition: SegmentReportingInformationLineItems to IncomeTaxExpenseBenefit" order="11.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossIncludingPortionAttributableToNoncontrollingInterest" xlink:label="IncomeLossIncludingPortionAttributableToNoncontrollingInterest" xlink:title="IncomeLossIncludingPortionAttributableToNoncontrollingInterest" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentReportingInformationLineItems" xlink:to="IncomeLossIncludingPortionAttributableToNoncontrollingInterest" xlink:title="definition: SegmentReportingInformationLineItems to IncomeLossIncludingPortionAttributableToNoncontrollingInterest" order="12.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="ScheduleOfSegmentReportingInformationBySegmentTable" xlink:title="ScheduleOfSegmentReportingInformationBySegmentTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="SegmentReportingInformationLineItems" xlink:to="ScheduleOfSegmentReportingInformationBySegmentTable" xlink:title="definition: SegmentReportingInformationLineItems to ScheduleOfSegmentReportingInformationBySegmentTable" order="13.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TypeOfRevenueAxis" xlink:label="TypeOfRevenueAxis" xlink:title="TypeOfRevenueAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="TypeOfRevenueAxis" xlink:title="definition: ScheduleOfSegmentReportingInformationBySegmentTable to TypeOfRevenueAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TypeOfRevenueDomain" xlink:label="TypeOfRevenueDomain" xlink:title="TypeOfRevenueDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="TypeOfRevenueAxis" xlink:to="TypeOfRevenueDomain" xlink:title="definition: TypeOfRevenueAxis to TypeOfRevenueDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TypeOfRevenueDomain" xlink:label="TypeOfRevenueDomain_2" xlink:title="TypeOfRevenueDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="TypeOfRevenueAxis" xlink:to="TypeOfRevenueDomain_2" xlink:title="definition: TypeOfRevenueAxis to TypeOfRevenueDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TotalOutsideRevenuesMember" xlink:label="TotalOutsideRevenuesMember" xlink:title="TotalOutsideRevenuesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TypeOfRevenueDomain" xlink:to="TotalOutsideRevenuesMember" xlink:title="definition: TypeOfRevenueDomain to TotalOutsideRevenuesMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TotalIntersegmentRevenuesMember" xlink:label="TotalIntersegmentRevenuesMember" xlink:title="TotalIntersegmentRevenuesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TypeOfRevenueDomain" xlink:to="TotalIntersegmentRevenuesMember" xlink:title="definition: TypeOfRevenueDomain to TotalIntersegmentRevenuesMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="StatementBusinessSegmentsAxis" xlink:title="definition: ScheduleOfSegmentReportingInformationBySegmentTable to StatementBusinessSegmentsAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="SegmentDomain" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="StatementBusinessSegmentsAxis" xlink:to="SegmentDomain" xlink:title="definition: StatementBusinessSegmentsAxis to SegmentDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="SegmentDomain_2" xlink:title="SegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="StatementBusinessSegmentsAxis" xlink:to="SegmentDomain_2" xlink:title="definition: StatementBusinessSegmentsAxis to SegmentDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_FieldGatheringAndProcessingMember" xlink:label="FieldGatheringAndProcessingMember" xlink:title="FieldGatheringAndProcessingMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="FieldGatheringAndProcessingMember" xlink:title="definition: SegmentDomain to FieldGatheringAndProcessingMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_CoastalMember" xlink:label="CoastalMember" xlink:title="CoastalMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="CoastalMember" xlink:title="definition: SegmentDomain to CoastalMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_LogisticsMember" xlink:label="LogisticsMember" xlink:title="LogisticsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="LogisticsMember" xlink:title="definition: SegmentDomain to LogisticsMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_MarketingMember" xlink:label="MarketingMember" xlink:title="MarketingMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="MarketingMember" xlink:title="definition: SegmentDomain to MarketingMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_OtherSegmentMember" xlink:label="OtherSegmentMember" xlink:title="OtherSegmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="OtherSegmentMember" xlink:title="definition: SegmentDomain to OtherSegmentMember" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CorporateMember" xlink:label="CorporateMember" xlink:title="CorporateMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="CorporateMember" xlink:title="definition: SegmentDomain to CorporateMember" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TrcNonPartnershipMember" xlink:label="TrcNonPartnershipMember" xlink:title="TrcNonPartnershipMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="TrcNonPartnershipMember" xlink:title="definition: SegmentDomain to TrcNonPartnershipMember" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_NaturalGasSalesMember" xlink:label="NaturalGasSalesMember" xlink:title="NaturalGasSalesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="NaturalGasSalesMember" xlink:title="definition: SegmentDomain to NaturalGasSalesMember" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_NglSalesMember" xlink:label="NglSalesMember" xlink:title="NglSalesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="NglSalesMember" xlink:title="definition: SegmentDomain to NglSalesMember" order="9.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_CondensateSalesMember" xlink:label="CondensateSalesMember" xlink:title="CondensateSalesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="CondensateSalesMember" xlink:title="definition: SegmentDomain to CondensateSalesMember" order="10.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_PetroleumProductsMember" xlink:label="PetroleumProductsMember" xlink:title="PetroleumProductsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="PetroleumProductsMember" xlink:title="definition: SegmentDomain to PetroleumProductsMember" order="11.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_DerivativeActivitiesMember" xlink:label="DerivativeActivitiesMember" xlink:title="DerivativeActivitiesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="DerivativeActivitiesMember" xlink:title="definition: SegmentDomain to DerivativeActivitiesMember" order="12.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_FractionatingAndTreatingFeesMember" xlink:label="FractionatingAndTreatingFeesMember" xlink:title="FractionatingAndTreatingFeesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="FractionatingAndTreatingFeesMember" xlink:title="definition: SegmentDomain to FractionatingAndTreatingFeesMember" order="13.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_StorageAndTerminalingFeesMember" xlink:label="StorageAndTerminalingFeesMember" xlink:title="StorageAndTerminalingFeesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="StorageAndTerminalingFeesMember" xlink:title="definition: SegmentDomain to StorageAndTerminalingFeesMember" order="14.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_GatheringAndProcessingFeesMember" xlink:label="GatheringAndProcessingFeesMember" xlink:title="GatheringAndProcessingFeesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="GatheringAndProcessingFeesMember" xlink:title="definition: SegmentDomain to GatheringAndProcessingFeesMember" order="15.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_GasProcessingFeesMember" xlink:label="GasProcessingFeesMember" xlink:title="GasProcessingFeesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="GasProcessingFeesMember" xlink:title="definition: SegmentDomain to GasProcessingFeesMember" order="16.0" />
    <link:loc xlink:type="locator" xlink:href="trgp-20140331.xsd#trgp_TotalOtherRevenuesMember" xlink:label="TotalOtherRevenuesMember" xlink:title="TotalOtherRevenuesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="SegmentDomain" xlink:to="TotalOtherRevenuesMember" xlink:title="definition: SegmentDomain to TotalOtherRevenuesMember" order="17.0" />
  </link:definitionLink>
</link:linkbase>
