<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.boozallen.com/20200331" xmlns:bah="http://www.boozallen.com/20200331" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import namespace="http://fasb.org/srt-types/2019-01-31" schemaLocation="http://xbrl.fasb.org/srt/2019/elts/srt-types-2019-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/srt/2019-01-31" schemaLocation="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-gaap/2019-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2019-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2019/elts/us-roles-2019-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2019-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2019/elts/us-types-2019-01-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/country/2017-01-31" schemaLocation="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/currency/2019-01-31" schemaLocation="https://xbrl.sec.gov/currency/2019/currency-2019-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2019-01-31" schemaLocation="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/exch/2019-01-31" schemaLocation="https://xbrl.sec.gov/exch/2019/exch-2019-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/naics/2017-01-31" schemaLocation="http://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2018-01-31" schemaLocation="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="bah-20200331_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="bah-20200331_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="bah-20200331_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="bah-20200331_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="AccountsPayableAndOtherAccruedExpenses" roleURI="http://www.boozallen.com/role/AccountsPayableAndOtherAccruedExpenses">
        <link:definition>2115100 - Disclosure - Accounts Payable and Other Accrued Expenses</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsPayableAndOtherAccruedExpensesDetails" roleURI="http://www.boozallen.com/role/AccountsPayableAndOtherAccruedExpensesDetails">
        <link:definition>2415402 - Disclosure - Accounts Payable and Other Accrued Expenses (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsPayableAndOtherAccruedExpensesTables" roleURI="http://www.boozallen.com/role/AccountsPayableAndOtherAccruedExpensesTables">
        <link:definition>2315301 - Disclosure - Accounts Payable and Other Accrued Expenses (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsReceivableNetOfAllowance" roleURI="http://www.boozallen.com/role/AccountsReceivableNetOfAllowance">
        <link:definition>2112100 - Disclosure - Accounts Receivable, Net of Allowance</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsReceivableNetOfAllowanceDetails" roleURI="http://www.boozallen.com/role/AccountsReceivableNetOfAllowanceDetails">
        <link:definition>2412402 - Disclosure - Accounts Receivable, Net of Allowance (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsReceivableNetOfAllowanceTables" roleURI="http://www.boozallen.com/role/AccountsReceivableNetOfAllowanceTables">
        <link:definition>2312301 - Disclosure - Accounts Receivable, Net of Allowance (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedCompensationAndBenefits" roleURI="http://www.boozallen.com/role/AccruedCompensationAndBenefits">
        <link:definition>2118100 - Disclosure - Accrued Compensation and Benefits</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedCompensationAndBenefitsDetails" roleURI="http://www.boozallen.com/role/AccruedCompensationAndBenefitsDetails">
        <link:definition>2418402 - Disclosure - Accrued Compensation and Benefits (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedCompensationAndBenefitsTables" roleURI="http://www.boozallen.com/role/AccruedCompensationAndBenefitsTables">
        <link:definition>2318301 - Disclosure - Accrued Compensation and Benefits (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccumulatedOtherComprehensiveLoss" roleURI="http://www.boozallen.com/role/AccumulatedOtherComprehensiveLoss">
        <link:definition>2126100 - Disclosure - Accumulated Other Comprehensive Loss</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccumulatedOtherComprehensiveLossScheduleOfChangesInAccumulatedOtherComprehensiveIncomeLossDetails" roleURI="http://www.boozallen.com/role/AccumulatedOtherComprehensiveLossScheduleOfChangesInAccumulatedOtherComprehensiveIncomeLossDetails">
        <link:definition>2426402 - Disclosure - Accumulated Other Comprehensive Loss - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccumulatedOtherComprehensiveLossScheduleOfReclassificationsOutOfAccumulatedOtherComprehensiveLossToNetIncomeDetails" roleURI="http://www.boozallen.com/role/AccumulatedOtherComprehensiveLossScheduleOfReclassificationsOutOfAccumulatedOtherComprehensiveLossToNetIncomeDetails">
        <link:definition>2426403 - Disclosure - Accumulated Other Comprehensive Loss - Schedule of Reclassifications out of Accumulated Other Comprehensive Loss to Net Income (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccumulatedOtherComprehensiveLossTables" roleURI="http://www.boozallen.com/role/AccumulatedOtherComprehensiveLossTables">
        <link:definition>2326301 - Disclosure - Accumulated Other Comprehensive Loss (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessOverview" roleURI="http://www.boozallen.com/role/BusinessOverview">
        <link:definition>2101100 - Disclosure - Business Overview</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessOverviewDetails" roleURI="http://www.boozallen.com/role/BusinessOverviewDetails">
        <link:definition>2401401 - Disclosure - Business Overview (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentInformation" roleURI="http://www.boozallen.com/role/BusinessSegmentInformation">
        <link:definition>2135100 - Disclosure - Business Segment Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentInformationDetails" roleURI="http://www.boozallen.com/role/BusinessSegmentInformationDetails">
        <link:definition>2435401 - Disclosure - Business Segment Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingencies" roleURI="http://www.boozallen.com/role/CommitmentsAndContingencies">
        <link:definition>2134100 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesGovernmentContractingAndGuaranteesDetails" roleURI="http://www.boozallen.com/role/CommitmentsAndContingenciesGovernmentContractingAndGuaranteesDetails">
        <link:definition>2434401 - Disclosure - Commitments and Contingencies - Government Contracting and Guarantees (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesLitigationDetails" roleURI="http://www.boozallen.com/role/CommitmentsAndContingenciesLitigationDetails">
        <link:definition>2434402 - Disclosure - Commitments and Contingencies - Litigation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheets" roleURI="http://www.boozallen.com/role/ConsolidatedBalanceSheets">
        <link:definition>1001000 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheetsParenthetical" roleURI="http://www.boozallen.com/role/ConsolidatedBalanceSheetsParenthetical">
        <link:definition>1001501 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfCashFlows" roleURI="http://www.boozallen.com/role/ConsolidatedStatementsOfCashFlows">
        <link:definition>1004000 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfComprehensiveIncome" roleURI="http://www.boozallen.com/role/ConsolidatedStatementsOfComprehensiveIncome">
        <link:definition>1003000 - Statement - Consolidated Statements of Comprehensive Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfOperations" roleURI="http://www.boozallen.com/role/ConsolidatedStatementsOfOperations">
        <link:definition>1002000 - Statement - Consolidated Statements of Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfStockholdersEquity" roleURI="http://www.boozallen.com/role/ConsolidatedStatementsOfStockholdersEquity">
        <link:definition>1005000 - Statement - Consolidated Statements of Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfStockholdersEquityConsolidatedStatementsOfStockholdersEquityParenthetical" roleURI="http://www.boozallen.com/role/ConsolidatedStatementsOfStockholdersEquityConsolidatedStatementsOfStockholdersEquityParenthetical">
        <link:definition>1005001 - Statement - Consolidated Statements of Stockholders' Equity Consolidated Statements of Stockholders' Equity (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Cover" roleURI="http://www.boozallen.com/role/Cover">
        <link:definition>0001000 - Document - Cover</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Debt" roleURI="http://www.boozallen.com/role/Debt">
        <link:definition>2120100 - Disclosure - Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtNarrativeDetails" roleURI="http://www.boozallen.com/role/DebtNarrativeDetails">
        <link:definition>2420403 - Disclosure - Debt - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtScheduleOfDebtDetails" roleURI="http://www.boozallen.com/role/DebtScheduleOfDebtDetails">
        <link:definition>2420402 - Disclosure - Debt - Schedule of Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtScheduleOfDebtDetailsCalc2" roleURI="http://www.boozallen.com/role/DebtScheduleOfDebtDetailsCalc2">
        <link:definition>2420402 - Disclosure - Debt - Schedule of Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtScheduleOfDetailOfInterestExpenseDetails" roleURI="http://www.boozallen.com/role/DebtScheduleOfDetailOfInterestExpenseDetails">
        <link:definition>2420405 - Disclosure - Debt - Schedule of Detail of Interest Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtScheduleOfFutureDebtPrincipalRepaymentsDetails" roleURI="http://www.boozallen.com/role/DebtScheduleOfFutureDebtPrincipalRepaymentsDetails">
        <link:definition>2420404 - Disclosure - Debt - Schedule of Future Debt Principal Repayments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtTables" roleURI="http://www.boozallen.com/role/DebtTables">
        <link:definition>2320301 - Disclosure - Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DeferredPaymentObligation" roleURI="http://www.boozallen.com/role/DeferredPaymentObligation">
        <link:definition>2119100 - Disclosure - Deferred Payment Obligation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DeferredPaymentObligationDetails" roleURI="http://www.boozallen.com/role/DeferredPaymentObligationDetails">
        <link:definition>2419401 - Disclosure - Deferred Payment Obligation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Derivatives" roleURI="http://www.boozallen.com/role/Derivatives">
        <link:definition>2121100 - Disclosure - Derivatives</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesNarrativeDetails" roleURI="http://www.boozallen.com/role/DerivativesNarrativeDetails">
        <link:definition>2421402 - Disclosure - Derivatives - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesScheduleOfEffectOfDerivativesOnFinancialStatementsDetails" roleURI="http://www.boozallen.com/role/DerivativesScheduleOfEffectOfDerivativesOnFinancialStatementsDetails">
        <link:definition>2421403 - Disclosure - Derivatives - Schedule of Effect of Derivatives on Financial Statements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesTables" roleURI="http://www.boozallen.com/role/DerivativesTables">
        <link:definition>2321301 - Disclosure - Derivatives (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShare" roleURI="http://www.boozallen.com/role/EarningsPerShare">
        <link:definition>2104100 - Disclosure - Earnings Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareDetails" roleURI="http://www.boozallen.com/role/EarningsPerShareDetails">
        <link:definition>2404402 - Disclosure - Earnings Per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareTables" roleURI="http://www.boozallen.com/role/EarningsPerShareTables">
        <link:definition>2304301 - Disclosure - Earnings Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeBenefitPlans" roleURI="http://www.boozallen.com/role/EmployeeBenefitPlans">
        <link:definition>2125100 - Disclosure - Employee Benefit Plans</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeBenefitPlansAccumulatedOtherComprehensiveIncomeDetails" roleURI="http://www.boozallen.com/role/EmployeeBenefitPlansAccumulatedOtherComprehensiveIncomeDetails">
        <link:definition>2425407 - Disclosure - Employee Benefit Plans - Accumulated Other Comprehensive Income (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeBenefitPlansChangeInBenefitObligationAndChangeInPlanAssetsDetails" roleURI="http://www.boozallen.com/role/EmployeeBenefitPlansChangeInBenefitObligationAndChangeInPlanAssetsDetails">
        <link:definition>2425408 - Disclosure - Employee Benefit Plans - Change in Benefit Obligation and Change in Plan Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeBenefitPlansComponentsOfNetPostretirementMedicalExpenseDetails" roleURI="http://www.boozallen.com/role/EmployeeBenefitPlansComponentsOfNetPostretirementMedicalExpenseDetails">
        <link:definition>2425403 - Disclosure - Employee Benefit Plans - Components of Net Postretirement Medical Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeBenefitPlansFutureBenefitPaymentsDetails" roleURI="http://www.boozallen.com/role/EmployeeBenefitPlansFutureBenefitPaymentsDetails">
        <link:definition>2425409 - Disclosure - Employee Benefit Plans - Future Benefit Payments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeBenefitPlansHealthcareCostTrendRatesDetails" roleURI="http://www.boozallen.com/role/EmployeeBenefitPlansHealthcareCostTrendRatesDetails">
        <link:definition>2425405 - Disclosure - Employee Benefit Plans - Healthcare Cost Trend Rates (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeBenefitPlansNarrativeDetails" roleURI="http://www.boozallen.com/role/EmployeeBenefitPlansNarrativeDetails">
        <link:definition>2425402 - Disclosure - Employee Benefit Plans - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeBenefitPlansRetiredOfficersBonusPlanAndRetiredVpBonusPlanDetails" roleURI="http://www.boozallen.com/role/EmployeeBenefitPlansRetiredOfficersBonusPlanAndRetiredVpBonusPlanDetails">
        <link:definition>2425406 - Disclosure - Employee Benefit Plans - Retired Officers' Bonus Plan and Retired VP Bonus Plan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeBenefitPlansTables" roleURI="http://www.boozallen.com/role/EmployeeBenefitPlansTables">
        <link:definition>2325301 - Disclosure - Employee Benefit Plans (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeBenefitPlansWeightedAverageDiscountRateDetails" roleURI="http://www.boozallen.com/role/EmployeeBenefitPlansWeightedAverageDiscountRateDetails">
        <link:definition>2425404 - Disclosure - Employee Benefit Plans - Weighted Average Discount Rate (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurements" roleURI="http://www.boozallen.com/role/FairValueMeasurements">
        <link:definition>2133100 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsScheduleOfRecurringFairValueMeasurementsDetails" roleURI="http://www.boozallen.com/role/FairValueMeasurementsScheduleOfRecurringFairValueMeasurementsDetails">
        <link:definition>2433402 - Disclosure - Fair Value Measurements - Schedule of Recurring Fair Value Measurements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsTables" roleURI="http://www.boozallen.com/role/FairValueMeasurementsTables">
        <link:definition>2333301 - Disclosure - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndIntangibleAssets" roleURI="http://www.boozallen.com/role/GoodwillAndIntangibleAssets">
        <link:definition>2111100 - Disclosure - Goodwill and Intangible Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndIntangibleAssetsNarrativeDetails" roleURI="http://www.boozallen.com/role/GoodwillAndIntangibleAssetsNarrativeDetails">
        <link:definition>2411402 - Disclosure - Goodwill and Intangible Assets - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndIntangibleAssetsScheduleOfExpectedAmortizationExpenseDetails" roleURI="http://www.boozallen.com/role/GoodwillAndIntangibleAssetsScheduleOfExpectedAmortizationExpenseDetails">
        <link:definition>2411404 - Disclosure - Goodwill and Intangible Assets - Schedule of Expected Amortization Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndIntangibleAssetsScheduleOfFiniteLivedIntangibleAssetsDetails" roleURI="http://www.boozallen.com/role/GoodwillAndIntangibleAssetsScheduleOfFiniteLivedIntangibleAssetsDetails">
        <link:definition>2411403 - Disclosure - Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndIntangibleAssetsScheduleOfFiniteLivedIntangibleAssetsDetailsCalc2" roleURI="http://www.boozallen.com/role/GoodwillAndIntangibleAssetsScheduleOfFiniteLivedIntangibleAssetsDetailsCalc2">
        <link:definition>2411403 - Disclosure - Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndIntangibleAssetsTables" roleURI="http://www.boozallen.com/role/GoodwillAndIntangibleAssetsTables">
        <link:definition>2311301 - Disclosure - Goodwill and Intangible Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.boozallen.com/role/IncomeTaxes">
        <link:definition>2123100 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesComponentsOfIncomeTaxesDetails" roleURI="http://www.boozallen.com/role/IncomeTaxesComponentsOfIncomeTaxesDetails">
        <link:definition>2423402 - Disclosure - Income Taxes - Components of Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesComponentsOfNetDeferredIncomeTaxesDetails" roleURI="http://www.boozallen.com/role/IncomeTaxesComponentsOfNetDeferredIncomeTaxesDetails">
        <link:definition>2423404 - Disclosure - Income Taxes - Components of Net Deferred Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesNarrativeDetails" roleURI="http://www.boozallen.com/role/IncomeTaxesNarrativeDetails">
        <link:definition>2423405 - Disclosure - Income Taxes - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesReconciliationOfIncomeTaxDetails" roleURI="http://www.boozallen.com/role/IncomeTaxesReconciliationOfIncomeTaxDetails">
        <link:definition>2423403 - Disclosure - Income Taxes - Reconciliation of Income Tax (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTables" roleURI="http://www.boozallen.com/role/IncomeTaxesTables">
        <link:definition>2323301 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesFutureMinimumIncomeForNoncancelableSubleaseRentalsDetails" roleURI="http://www.boozallen.com/role/LeasesFutureMinimumIncomeForNoncancelableSubleaseRentalsDetails">
        <link:definition>2422405 - Disclosure - Leases - Future Minimum Income For Noncancelable Sublease Rentals (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesFutureMinimumObligationsForNoncancelableOperatingLeasesDetails" roleURI="http://www.boozallen.com/role/LeasesFutureMinimumObligationsForNoncancelableOperatingLeasesDetails">
        <link:definition>2422403 - Disclosure - Leases - Future Minimum Obligations for Noncancelable Operating Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesFutureMinimumObligationsForNoncancelableOperatingLeasesDetailsCalc2" roleURI="http://www.boozallen.com/role/LeasesFutureMinimumObligationsForNoncancelableOperatingLeasesDetailsCalc2">
        <link:definition>2422403 - Disclosure - Leases - Future Minimum Obligations for Noncancelable Operating Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesNotes" roleURI="http://www.boozallen.com/role/LeasesNotes">
        <link:definition>2122100 - Disclosure - Leases (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleOfLeaseCostDetails" roleURI="http://www.boozallen.com/role/LeasesScheduleOfLeaseCostDetails">
        <link:definition>2422402 - Disclosure - Leases - Schedule of Lease Cost (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesSupplementalCashFlowAndOtherInformationDetails" roleURI="http://www.boozallen.com/role/LeasesSupplementalCashFlowAndOtherInformationDetails">
        <link:definition>2422404 - Disclosure - Leases - Supplemental Cash Flow and Other Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesTables" roleURI="http://www.boozallen.com/role/LeasesTables">
        <link:definition>2322301 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherLongTermLiabilities" roleURI="http://www.boozallen.com/role/OtherLongTermLiabilities">
        <link:definition>2127100 - Disclosure - Other Long-Term Liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherLongTermLiabilitiesDetails" roleURI="http://www.boozallen.com/role/OtherLongTermLiabilitiesDetails">
        <link:definition>2427402 - Disclosure - Other Long-Term Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherLongTermLiabilitiesTables" roleURI="http://www.boozallen.com/role/OtherLongTermLiabilitiesTables">
        <link:definition>2327301 - Disclosure - Other Long-Term Liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyAndEquipmentNet" roleURI="http://www.boozallen.com/role/PropertyAndEquipmentNet">
        <link:definition>2114100 - Disclosure - Property and Equipment, Net</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyAndEquipmentNetDetails" roleURI="http://www.boozallen.com/role/PropertyAndEquipmentNetDetails">
        <link:definition>2414402 - Disclosure - Property and Equipment, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyAndEquipmentNetTables" roleURI="http://www.boozallen.com/role/PropertyAndEquipmentNetTables">
        <link:definition>2314301 - Disclosure - Property and Equipment, Net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactions" roleURI="http://www.boozallen.com/role/RelatedPartyTransactions">
        <link:definition>213100 - Disclosure - Related-Party Transactions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactionsDetails" roleURI="http://www.boozallen.com/role/RelatedPartyTransactionsDetails">
        <link:definition>243401 - Disclosure - Related-Party Transactions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Revenue" roleURI="http://www.boozallen.com/role/Revenue">
        <link:definition>2103100 - Disclosure - Revenue</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueDisaggregationOfRevenueDetails" roleURI="http://www.boozallen.com/role/RevenueDisaggregationOfRevenueDetails">
        <link:definition>2403402 - Disclosure - Revenue - Disaggregation of Revenue (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueNarrativeDetails" roleURI="http://www.boozallen.com/role/RevenueNarrativeDetails">
        <link:definition>2403403 - Disclosure - Revenue - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueSummaryOfContractBalancesDetails" roleURI="http://www.boozallen.com/role/RevenueSummaryOfContractBalancesDetails">
        <link:definition>2403404 - Disclosure - Revenue - Summary of Contract Balances (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueTables" roleURI="http://www.boozallen.com/role/RevenueTables">
        <link:definition>2303301 - Disclosure - Revenue (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensation" roleURI="http://www.boozallen.com/role/StockBasedCompensation">
        <link:definition>2131100 - Disclosure - Stock-Based Compensation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationEmployeeStockPurchasePlanDetails" roleURI="http://www.boozallen.com/role/StockBasedCompensationEmployeeStockPurchasePlanDetails">
        <link:definition>2431408 - Disclosure - Stock-Based Compensation - Employee Stock purchase Plan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationScheduleOfStockOptionsGrantedDetails" roleURI="http://www.boozallen.com/role/StockBasedCompensationScheduleOfStockOptionsGrantedDetails">
        <link:definition>2431405 - Disclosure - Stock-Based Compensation - Schedule of Stock Options Granted (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationStockBasedCompensationExpenseDetails" roleURI="http://www.boozallen.com/role/StockBasedCompensationStockBasedCompensationExpenseDetails">
        <link:definition>2431402 - Disclosure - Stock-Based Compensation - Stock-based Compensation Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationStockOptionAndRestrictedStockAwardActivityDetails" roleURI="http://www.boozallen.com/role/StockBasedCompensationStockOptionAndRestrictedStockAwardActivityDetails">
        <link:definition>2431407 - Disclosure - Stock-Based Compensation - Stock Option and Restricted Stock Award Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationStockOptionAssumptionsDetails" roleURI="http://www.boozallen.com/role/StockBasedCompensationStockOptionAssumptionsDetails">
        <link:definition>2431406 - Disclosure - Stock-Based Compensation - Stock Option Assumptions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationSummaryOfStockPlansDetails" roleURI="http://www.boozallen.com/role/StockBasedCompensationSummaryOfStockPlansDetails">
        <link:definition>2431404 - Disclosure - Stock-Based Compensation - Summary of Stock Plans (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationSummaryOfUnrecognizedCompensationDetails" roleURI="http://www.boozallen.com/role/StockBasedCompensationSummaryOfUnrecognizedCompensationDetails">
        <link:definition>2431403 - Disclosure - Stock-Based Compensation - Summary of Unrecognized Compensation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationTables" roleURI="http://www.boozallen.com/role/StockBasedCompensationTables">
        <link:definition>2331301 - Disclosure - Stock-Based Compensation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquity" roleURI="http://www.boozallen.com/role/StockholdersEquity">
        <link:definition>2129100 - Disclosure - Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityNarrativeDetails" roleURI="http://www.boozallen.com/role/StockholdersEquityNarrativeDetails">
        <link:definition>2429402 - Disclosure - Stockholders' Equity - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquitySummaryOfDividendsDetails" roleURI="http://www.boozallen.com/role/StockholdersEquitySummaryOfDividendsDetails">
        <link:definition>2429403 - Disclosure - Stockholders' Equity - Summary of Dividends (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityTables" roleURI="http://www.boozallen.com/role/StockholdersEquityTables">
        <link:definition>2329301 - Disclosure - Stockholders Equity (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEvents" roleURI="http://www.boozallen.com/role/SubsequentEvents">
        <link:definition>2138100 - Disclosure - Subsequent Events</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventsDetails" roleURI="http://www.boozallen.com/role/SubsequentEventsDetails">
        <link:definition>2438401 - Disclosure - Subsequent Events (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPolicies" roleURI="http://www.boozallen.com/role/SummaryOfSignificantAccountingPolicies">
        <link:definition>2102100 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesIntangibleAssetsAndGoodwillDetails" roleURI="http://www.boozallen.com/role/SummaryOfSignificantAccountingPoliciesIntangibleAssetsAndGoodwillDetails">
        <link:definition>2402404 - Disclosure - Summary of Significant Accounting Policies - Intangible Assets and Goodwill (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesPolicies" roleURI="http://www.boozallen.com/role/SummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>2202201 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesPropertyPlantAndEquipmentDetails" roleURI="http://www.boozallen.com/role/SummaryOfSignificantAccountingPoliciesPropertyPlantAndEquipmentDetails">
        <link:definition>2402403 - Disclosure - Summary of Significant Accounting Policies - Property, Plant and Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesRecentAccountingPronouncementsDetails" roleURI="http://www.boozallen.com/role/SummaryOfSignificantAccountingPoliciesRecentAccountingPronouncementsDetails">
        <link:definition>2402405 - Disclosure - Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesScheduleOfEffectOfAdoptionDetails" roleURI="http://www.boozallen.com/role/SummaryOfSignificantAccountingPoliciesScheduleOfEffectOfAdoptionDetails">
        <link:definition>2402406 - Disclosure - Summary of Significant Accounting Policies - Schedule of Effect of Adoption (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesTables" roleURI="http://www.boozallen.com/role/SummaryOfSignificantAccountingPoliciesTables">
        <link:definition>2302302 - Disclosure - Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalFinancialInformation" roleURI="http://www.boozallen.com/role/SupplementalFinancialInformation">
        <link:definition>2137100 - Disclosure - Supplemental Financial Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalFinancialInformationDetails" roleURI="http://www.boozallen.com/role/SupplementalFinancialInformationDetails">
        <link:definition>2437402 - Disclosure - Supplemental Financial Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalFinancialInformationTables" roleURI="http://www.boozallen.com/role/SupplementalFinancialInformationTables">
        <link:definition>2337301 - Disclosure - Supplemental Financial Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="UnauditedQuarterlyFinancialData" roleURI="http://www.boozallen.com/role/UnauditedQuarterlyFinancialData">
        <link:definition>2136100 - Disclosure - Unaudited Quarterly Financial Data</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="UnauditedQuarterlyFinancialDataDetails" roleURI="http://www.boozallen.com/role/UnauditedQuarterlyFinancialDataDetails">
        <link:definition>2436402 - Disclosure - Unaudited Quarterly Financial Data (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="UnauditedQuarterlyFinancialDataTables" roleURI="http://www.boozallen.com/role/UnauditedQuarterlyFinancialDataTables">
        <link:definition>2336301 - Disclosure - Unaudited Quarterly Financial Data (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element id="bah_AdjustmentsToAdditionalPaidInCapitalRecognitionOfLiabilityRelatedToFutureRestrictedStockUnitsVesting" name="AdjustmentsToAdditionalPaidInCapitalRecognitionOfLiabilityRelatedToFutureRestrictedStockUnitsVesting" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bah_AdjustmentsToAdditionalPaidInCapitalRecognitionOfLiabilityRelatedToFutureStockOptionExercises" name="AdjustmentsToAdditionalPaidInCapitalRecognitionOfLiabilityRelatedToFutureStockOptionExercises" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_AlternativeBaseRateABRMember" name="AlternativeBaseRateABRMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_AmendedAndRestatedEquityIncentivePlanMember" name="AmendedAndRestatedEquityIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_AmortizationOfFinancingCostsAndDiscountsandGainLossonExtinguishmentofDebt" name="AmortizationOfFinancingCostsAndDiscountsandGainLossonExtinguishmentofDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_AnnualIncentivePlanMember" name="AnnualIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_BillableExpenses" name="BillableExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_CivilClientsMember" name="CivilClientsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_CommonStockVotesPerShare" name="CommonStockVotesPerShare" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_CostReimbursableContractMember" name="CostReimbursableContractMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_DebtCovenantExpandedLoanPercentageofConsolidatedEBITDARequired" name="DebtCovenantExpandedLoanPercentageofConsolidatedEBITDARequired" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_DebtInstrumentDebtCovenantPremiumPayablePercent" name="DebtInstrumentDebtCovenantPremiumPayablePercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bah_DebtInstrumentNetSecuredLeverageRatioMaximum" name="DebtInstrumentNetSecuredLeverageRatioMaximum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_DebtInstrumentQuarterlyPeriodicPaymentPercentagePrincipal" name="DebtInstrumentQuarterlyPeriodicPaymentPercentagePrincipal" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bah_DefenseClientsMember" name="DefenseClientsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_DeferredCompensationArrangementWithIndividualAnnualCashAwardGrantedPerYearOfServiceAmount" name="DeferredCompensationArrangementWithIndividualAnnualCashAwardGrantedPerYearOfServiceAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bah_DeferredCompensationPlansMaximumEligibleDeferralofCompensationPercentage" name="DeferredCompensationPlansMaximumEligibleDeferralofCompensationPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_DeferredPaymentObligation" name="DeferredPaymentObligation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bah_DeferredPaymentObligationInterestPayment" name="DeferredPaymentObligationInterestPayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bah_DeferredPaymentObligationOriginalAmount" name="DeferredPaymentObligationOriginalAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bah_DeferredPaymentObligationPayment" name="DeferredPaymentObligationPayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bah_DeferredPaymentObligationPaymentPursuantoftheMergerAgreement" name="DeferredPaymentObligationPaymentPursuantoftheMergerAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bah_DeferredPaymentObligationRequiredPayment" name="DeferredPaymentObligationRequiredPayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bah_DeferredPaymentObligationTerm" name="DeferredPaymentObligationTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_DeferredTaxAssetsNetOperatingLossCapitalLossCarryforwards" name="DeferredTaxAssetsNetOperatingLossCapitalLossCarryforwards" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bah_DeferredTaxAssetsOperatingLeaseLiability" name="DeferredTaxAssetsOperatingLeaseLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bah_DeferredTaxLiabilitiesCurrentAccountsReceivableUnbilled" name="DeferredTaxLiabilitiesCurrentAccountsReceivableUnbilled" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bah_DeferredTaxLiabilitiesInternallyDevelopedSoftware" name="DeferredTaxLiabilitiesInternallyDevelopedSoftware" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bah_DeferredTaxLiabilitiesOperatingLeaseRightofUseAsset" name="DeferredTaxLiabilitiesOperatingLeaseRightofUseAsset" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bah_DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPost65" name="DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPost65" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPre65" name="DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPre65" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_DefinedBenefitPlanUltimateHealthCareCostTrendRatePost65" name="DefinedBenefitPlanUltimateHealthCareCostTrendRatePost65" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_DefinedBenefitPlanUltimateHealthCareCostTrendRatePre65" name="DefinedBenefitPlanUltimateHealthCareCostTrendRatePre65" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_DerivativesNumberOfAgreementsEnteredIntoDuringThePeriod" name="DerivativesNumberOfAgreementsEnteredIntoDuringThePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_DerivativesNumberOfFinancialInstitutions" name="DerivativesNumberOfFinancialInstitutions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_DividendOptionExercisePriceReductionPerShare" name="DividendOptionExercisePriceReductionPerShare" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bah_DividendTypeAxis" name="DividendTypeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_DividendTypeDomain" name="DividendTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_DividendequivalentMember" name="DividendequivalentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_EffectiveIncomeTaxRateReconciliationBlendedRatePercent" name="EffectiveIncomeTaxRateReconciliationBlendedRatePercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncome" name="EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncome" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bah_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensationCostAmount" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensationCostAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bah_FiniteLivedIntangibleAssetsNetExcludingAssetsNotYetPlacedinService" name="FiniteLivedIntangibleAssetsNetExcludingAssetsNotYetPlacedinService" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bah_FormerStockholderLitigationMember" name="FormerStockholderLitigationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_ForwardStartingFloatingToFixedInterestRateSwapMember" name="ForwardStartingFloatingToFixedInterestRateSwapMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_GlobalCommercialClientsMember" name="GlobalCommercialClientsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_GuarantorObligationsAvailableAmount" name="GuarantorObligationsAvailableAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bah_GuarantorObligationsFacility" name="GuarantorObligationsFacility" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bah_IncreaseDecreaseInOperatingLeaseLiabilities" name="IncreaseDecreaseInOperatingLeaseLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bah_IncreaseDecreaseInPostemploymentBenefitsLiabilityNoncurrent" name="IncreaseDecreaseInPostemploymentBenefitsLiabilityNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_IntelligenceClientsMember" name="IntelligenceClientsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_InterestExpenseDebtInterestSwap" name="InterestExpenseDebtInterestSwap" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bah_InterestIncomeExpenseOther" name="InterestIncomeExpenseOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_LitigationCourtAxis" name="LitigationCourtAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_LitigationCourtTypeDomain" name="LitigationCourtTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_LongtermDebtMaximumExpandedLoanFacility" name="LongtermDebtMaximumExpandedLoanFacility" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bah_LossContingencyClaimsAmendedNumber" name="LossContingencyClaimsAmendedNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bah_NoncashFinancingActivities" name="NoncashFinancingActivities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bah_NoncashLeaseExpense" name="NoncashLeaseExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bah_NumberofDirectors" name="NumberofDirectors" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bah_NumberofDirectorsAppointable" name="NumberofDirectorsAppointable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bah_OfficerMedicalPlanMember" name="OfficerMedicalPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_OperatingLeaseLiabilityDeferredRentandTenantAllowances" name="OperatingLeaseLiabilityDeferredRentandTenantAllowances" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bah_OperatingLeaseLiabilityDeferredTaxAsset" name="OperatingLeaseLiabilityDeferredTaxAsset" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bah_OperatingLeaseRightofUseAssetDeferredTaxLiability" name="OperatingLeaseRightofUseAssetDeferredTaxLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bah_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsDueThereafter" name="OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsDueThereafter" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bah_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsInFiveYears" name="OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsInFiveYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bah_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsInFourYears" name="OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsInFourYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bah_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsInThreeYears" name="OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsInThreeYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bah_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsInTwelveMonths" name="OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsInTwelveMonths" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bah_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsInTwoYears" name="OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsInTwoYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bah_OperatingLeasesFutureMinimumPaymentsDueSubleaseRentalsFiscalYearMaturityAbstract" name="OperatingLeasesFutureMinimumPaymentsDueSubleaseRentalsFiscalYearMaturityAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_OrdinaryCashDividendMember" name="OrdinaryCashDividendMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax" name="OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_OvernightFederalFundsRateMember" name="OvernightFederalFundsRateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_PledgeObligationMember" name="PledgeObligationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_RetiredOfficersBonusPlanMember" name="RetiredOfficersBonusPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_RetiredOfficersBonusPlanandRetiredVicePresidentBonusPlanMember" name="RetiredOfficersBonusPlanandRetiredVicePresidentBonusPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_RetiredVicePresidentsBonusPlanMember" name="RetiredVicePresidentsBonusPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_RevenueFromContractWithCustomerExcludingAssessedTaxPercentage" name="RevenueFromContractWithCustomerExcludingAssessedTaxPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_RevenueRemainingPerformanceObligationExpectedTimingofSatisfactionPeriodOne" name="RevenueRemainingPerformanceObligationExpectedTimingofSatisfactionPeriodOne" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_RevenueRemainingPerformanceObligationExpectedTimingofSatisfactionPeriodTwo" name="RevenueRemainingPerformanceObligationExpectedTimingofSatisfactionPeriodTwo" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_RevolverMember" name="RevolverMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_SECSchedule1209ValuationAllowanceAccountsReceivableMember" name="SECSchedule1209ValuationAllowanceAccountsReceivableMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_ScheduleOfAccruedCompensationAndBenefitsTableTextBlock" name="ScheduleOfAccruedCompensationAndBenefitsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassLineItems" name="ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassTable" name="ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_ScheduleOfValuationAndQualifyingAccountsTableTextBlock" name="ScheduleOfValuationAndQualifyingAccountsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_SeniorNotesDue2025Member" name="SeniorNotesDue2025Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_ServicesPerformedUnderSubcontractorMember" name="ServicesPerformedUnderSubcontractorMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_ShareBasedCompensationArrangementbyShareBasedPaymentAwardOptionsGrantsinPeriodGrantDateFairValue" name="ShareBasedCompensationArrangementbyShareBasedPaymentAwardOptionsGrantsinPeriodGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bah_ShareRepurchasesIncurredButNotYetPaid" name="ShareRepurchasesIncurredButNotYetPaid" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_SpecialCashDividendMember" name="SpecialCashDividendMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_StockRepurchaseProgramSharesRepurchasedDiscountPercentage" name="StockRepurchaseProgramSharesRepurchasedDiscountPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_TaxCutsAndJobsActOf2017ReclassificationFromAOCIToRetainedEarnings" name="TaxCutsAndJobsActOf2017ReclassificationFromAOCIToRetainedEarnings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_TaxYears20132015Member" name="TaxYears20132015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_TaxYears20162019Member" name="TaxYears20162019Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_TrancheALoansMember" name="TrancheALoansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_TrancheBLoansMember" name="TrancheBLoansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_UnitedStatesCourtofAppealsfortheNinthCircuitMember" name="UnitedStatesCourtofAppealsfortheNinthCircuitMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_UnitedStatesCourtofAppealsfortheSecondCircuitMember" name="UnitedStatesCourtofAppealsfortheSecondCircuitMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bah_UnitedStatesDistrictCourtForTheEasternDistrictOfVirginiaStyledLangleyV.BoozAllenHamiltonHoldingCorp.Member" name="UnitedStatesDistrictCourtForTheEasternDistrictOfVirginiaStyledLangleyV.BoozAllenHamiltonHoldingCorp.Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bah_UnrecognizedCompensationCostNext12Months" name="UnrecognizedCompensationCostNext12Months" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bah_UnrecognizedCompensationCostYearFive" name="UnrecognizedCompensationCostYearFive" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bah_UnrecognizedCompensationCostYearFour" name="UnrecognizedCompensationCostYearFour" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bah_UnrecognizedCompensationCostYearThree" name="UnrecognizedCompensationCostYearThree" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bah_UnrecognizedCompensationCostYearTwo" name="UnrecognizedCompensationCostYearTwo" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bah_UnrecognizedTaxBenefitsReasonablyPossibleReductionResultingfromLapseofApplicableStatuteofLimitations" name="UnrecognizedTaxBenefitsReasonablyPossibleReductionResultingfromLapseofApplicableStatuteofLimitations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
</xsd:schema>
