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  <xsd:element id="dlhc_ComputerEquipment" name="ComputerEquipment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="dlhc_CostPlusFixedFeeContractMember" name="CostPlusFixedFeeContractMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_DLHEmployeesMember" name="DLHEmployeesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_DebtCovenantAxis" name="DebtCovenantAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_DebtCovenantDomain" name="DebtCovenantDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="dlhc_DebtInstrumentPaymentTermsNumberofEqualPayments" name="DebtInstrumentPaymentTermsNumberofEqualPayments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_DenominatorAbstract" name="DenominatorAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_DepartmentOfDefenseAndDepartmentOfVeteransAffairsMember" name="DepartmentOfDefenseAndDepartmentOfVeteransAffairsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_DepartmentOfVeteransAffairsMember" name="DepartmentOfVeteransAffairsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_DepartmentofHealthandHumanServicesMember" name="DepartmentofHealthandHumanServicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_DepartmentofPublicHealthandLifeSciencesMember" name="DepartmentofPublicHealthandLifeSciencesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="dlhc_DepreciationAmortizationAndDebtCosts" name="DepreciationAmortizationAndDebtCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="dlhc_DerivativeFinancialInstrumentsReclassifiedasEquityNoncashTransaction" name="DerivativeFinancialInstrumentsReclassifiedasEquityNoncashTransaction" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_EquipmentLeasesMember" name="EquipmentLeasesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_ExcessCashFlowsGreaterThanOrEqualto2.50Member" name="ExcessCashFlowsGreaterThanOrEqualto2.50Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_ExcessCashFlowsLessThan2.50GreaterThan2.00Member" name="ExcessCashFlowsLessThan2.50GreaterThan2.00Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_FacilityLeasesMember" name="FacilityLeasesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_FifthThirdBankCreditFacilityMember" name="FifthThirdBankCreditFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="dlhc_FiniteLivedIntangibleAssetsAmortizationExpenseYearSix" name="FiniteLivedIntangibleAssetsAmortizationExpenseYearSix" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="dlhc_FixedChargeCoverageRatio" name="FixedChargeCoverageRatio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="dlhc_GovernmentContractNumberofOptionPeriods" name="GovernmentContractNumberofOptionPeriods" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="dlhc_GovernmentContractTermofAward" name="GovernmentContractTermofAward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_HeadStartProgramMember" name="HeadStartProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_HumanServicesandSolutionsMember" name="HumanServicesandSolutionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="dlhc_LineofCreditFacilityPeriodCoveredbyVoluntaryRepayments" name="LineofCreditFacilityPeriodCoveredbyVoluntaryRepayments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_LogisticServicesMember" name="LogisticServicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_LongTermDebtandOperatingLeasesFutureMinimumPaymentsDueFiscalYearMaturityAbstract" name="LongTermDebtandOperatingLeasesFutureMinimumPaymentsDueFiscalYearMaturityAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_NonemployeeDirectorsMember" name="NonemployeeDirectorsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="dlhc_NumberOfLocationsInWhichEntityOperatesMinimum" name="NumberOfLocationsInWhichEntityOperatesMinimum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="dlhc_NumberofContracts" name="NumberofContracts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="dlhc_NumeratorAbstract" name="NumeratorAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_OtherCustomersMember" name="OtherCustomersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="dlhc_OtherIncomeExpenseTableTextBlock" name="OtherIncomeExpenseTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="dlhc_PercentageofExcessCashFlowForEachYearOfFundedIndebtednesstoAdjustedEBITDA" name="PercentageofExcessCashFlowForEachYearOfFundedIndebtednesstoAdjustedEBITDA" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_PharmacyServicesMember" name="PharmacyServicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="dlhc_PrepaidEmployeeBenefitsCurrent" name="PrepaidEmployeeBenefitsCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="dlhc_RatioofDebttoEarningsBeforeInterestTaxesDepreciationsandAmortization" name="RatioofDebttoEarningsBeforeInterestTaxesDepreciationsandAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="dlhc_RatioofDebttoEarningsBeforeInterestTaxesDepreciationsandAmortizationPeriodThree" name="RatioofDebttoEarningsBeforeInterestTaxesDepreciationsandAmortizationPeriodThree" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="dlhc_RatioofDebttoEarningsBeforeInterestTaxesDepreciationsandAmortizationPeriodTwo" name="RatioofDebttoEarningsBeforeInterestTaxesDepreciationsandAmortizationPeriodTwo" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="dlhc_RatioofFundedIndebtednesstoAdjustedEarningsBeforeInterestTaxesDepreciationsandAmortization" name="RatioofFundedIndebtednesstoAdjustedEarningsBeforeInterestTaxesDepreciationsandAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="dlhc_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationTerm" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dlhc_USGovernmentMember" name="USGovernmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="dlhc_VoluntaryRepaymentsofLinesofCredit" name="VoluntaryRepaymentsofLinesofCredit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
</xsd:schema>
