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  <xsd:element id="saic_OustandingChecks" name="OustandingChecks" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="saic_PercentageOfAwardsPresentedForTargetNumberOfShares" name="PercentageOfAwardsPresentedForTargetNumberOfShares" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="saic_PercentageOfStockAwardsVestOrExercisableAfterFourYears" name="PercentageOfStockAwardsVestOrExercisableAfterFourYears" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="saic_PercentageOfStockAwardsVestOrExercisableAfterOneYear" name="PercentageOfStockAwardsVestOrExercisableAfterOneYear" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="saic_PercentageOfStockAwardsVestOrExercisableAfterThreeYears" name="PercentageOfStockAwardsVestOrExercisableAfterThreeYears" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="saic_PercentageOfStockAwardsVestOrExercisableAfterTwoYears" name="PercentageOfStockAwardsVestOrExercisableAfterTwoYears" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="saic_PerformancePeriodAxis" name="PerformancePeriodAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_PerformancePeriodDomain" name="PerformancePeriodDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_PreContractCostMember" name="PreContractCostMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_PreContractCostNotAwardedMember" name="PreContractCostNotAwardedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_PrimeContractorMember" name="PrimeContractorMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_QuarterlyDividendMember" name="QuarterlyDividendMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="saic_RatioOfIndebtednessToEarningsBeforeInterestTaxesDepreciationAndAmortization" name="RatioOfIndebtednessToEarningsBeforeInterestTaxesDepreciationAndAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant" />
  <xsd:element id="saic_RestructuringCostsFacilities" name="RestructuringCostsFacilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="saic_RestructuringCostsLeaseExitCosts" name="RestructuringCostsLeaseExitCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_RetireeHealthReimbursementAccountPlanMember" name="RetireeHealthReimbursementAccountPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="saic_ScheduleOfShareBasedCompensationActivityRelatedToExerciseOfStockOptionsTableTextBlock" name="ScheduleOfShareBasedCompensationActivityRelatedToExerciseOfStockOptionsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_ScitorHoldingsIncMember" name="ScitorHoldingsIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_SecondAmendedAndRestatedCreditAgreementMember" name="SecondAmendedAndRestatedCreditAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_SecondTermMember" name="SecondTermMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="saic_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustment" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="saic_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentInPeriodWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentInPeriodWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="saic_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsContingentlyIssuableShares" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsContingentlyIssuableShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="saic_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsLowerThanMinimumPerformance" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsLowerThanMinimumPerformance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="saic_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsAwardsAssumed" name="SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsAwardsAssumed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="saic_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsGrantsAssumedWeightedAverageGrantDateFairValue" name="SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsGrantsAssumedWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_SharebasedPaymentArrangementMember" name="SharebasedPaymentArrangementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_SharebasedPaymentArrangementPostcombinationMember" name="SharebasedPaymentArrangementPostcombinationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_SharebasedPaymentArrangementPrecombinationMember" name="SharebasedPaymentArrangementPrecombinationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_SignificantAccountingPoliciesLineItems" name="SignificantAccountingPoliciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_SignificantAccountingPoliciesTable" name="SignificantAccountingPoliciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="saic_StockCancelledToCoverPriceOfOptionsExercises" name="StockCancelledToCoverPriceOfOptionsExercises" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_StockRepurchasePlanMember" name="StockRepurchasePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="saic_StockRepurchaseProgramIncreaseInNumberOfSharesAuthorizedToBeRepurchased" name="StockRepurchaseProgramIncreaseInNumberOfSharesAuthorizedToBeRepurchased" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="saic_StockRepurchasedAndRetiredUnderAuthorization" name="StockRepurchasedAndRetiredUnderAuthorization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_SubcontractorMember" name="SubcontractorMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="saic_TaxCutsAndJobsActReclassificationFromAOCIToRetainedEarningsTaxEffect" name="TaxCutsAndJobsActReclassificationFromAOCIToRetainedEarningsTaxEffect" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_TaxYear20162019Member" name="TaxYear20162019Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_TaxYear2020Member" name="TaxYear2020Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_TermLoanAFacilityDueAugustTwoThousandTwentyOneMember" name="TermLoanAFacilityDueAugustTwoThousandTwentyOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_TermLoanAFacilityDueOctoberTwoThousandTwentyThreeMember" name="TermLoanAFacilityDueOctoberTwoThousandTwentyThreeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_TermLoanBFacilityDueMayTwoThousandTwentyTwoMember" name="TermLoanBFacilityDueMayTwoThousandTwentyTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_TermLoanBFacilityDueOctoberTwoThousandTwentyFiveMember" name="TermLoanBFacilityDueOctoberTwoThousandTwentyFiveMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_ThirdAmendedCreditAgreementMember" name="ThirdAmendedCreditAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_ThirdTermMember" name="ThirdTermMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_TwoThousandAndThirteenEquityIncentivePlanMember" name="TwoThousandAndThirteenEquityIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_UnisysFederalMember" name="UnisysFederalMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_VestingStockAwardsAndEmployeeStockOptionGrantedPriorToFiscalTwentyFifteenMember" name="VestingStockAwardsAndEmployeeStockOptionGrantedPriorToFiscalTwentyFifteenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_VestingStockAwardsGrantedThereafterMember" name="VestingStockAwardsGrantedThereafterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="saic_VestingStockAwardsMember" name="VestingStockAwardsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
