content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
    <headerData>
      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001931766</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0001443646</issuerCik>
        <issuerName>Booz Allen Hamilton Holding Corp</issuerName>
        <secFileNumber>001-34972</secFileNumber>
        <issuerAddress>
          <com:street1>8283 GREENSBORO DRIVE</com:street1>
          <com:city>MCLEAN</com:city>
          <com:stateOrCountry>VA</com:stateOrCountry>
          <com:zipCode>22102</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>703-902-5000</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Crowe Richard</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Fidelity Brokerage Services LLC</name>
          <address>
            <com:street1>900 Salem Street</com:street1>
            <com:city>Smithfield</com:city>
            <com:stateOrCountry>RI</com:stateOrCountry>
            <com:zipCode>02917</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>1006</noOfUnitsSold>
        <aggregateMarketValue>152871.76</aggregateMarketValue>
        <noOfUnitsOutstanding>129320488</noOfUnitsOutstanding>
        <approxSaleDate>06/05/2024</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <acquiredDate>03/31/2023</acquiredDate>
        <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>510</amountOfSecuritiesAcquired>
        <paymentDate>03/31/2023</paymentDate>
        <natureOfPayment>Compensation</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <acquiredDate>05/23/2023</acquiredDate>
        <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>496</amountOfSecuritiesAcquired>
        <paymentDate>05/23/2023</paymentDate>
        <natureOfPayment>Compensation</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>06/05/2024</noticeDate>
        <planAdoptionDates>
          <planAdoptionDate>03/04/2024</planAdoptionDate>
        </planAdoptionDates>
        <signature>/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Richard Crowe</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 3488}]
text: 144
  0001931766
  XXXXXXXX
  LIVE
  0001443646
  Booz Allen Hamilton Holding Corp
  001-34972
  8283 GREENSBORO DRIVE
  MCLEAN
  VA
  22102
  703-902-5000
  Crowe Richard
  Officer
  Class A
  Fidelity Brokerage Services LLC
  900 Salem Street
  Smithfield
  RI
  02917
  1006
  152871.76
  129320488
  06/05/2024
  NYSE
  Class A
  03/31/2023
  Restricted Stock Vesting
  Issuer
  N
  510
  03/31/2023
  Compensation
  Class A
  05/23/2023
  Restricted Stock Vesting
  Issuer
  N
  496
  05/23/2023
  Compensation
  Y
  06/05/2024
  03/04/2024
  /s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Richard Crowe