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>0001946523</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>Calderone Matthew</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>1500</noOfUnitsSold>
        <aggregateMarketValue>216315.00</aggregateMarketValue>
        <noOfUnitsOutstanding>129745860</noOfUnitsOutstanding>
        <approxSaleDate>03/15/2024</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <acquiredDate>03/31/2022</acquiredDate>
        <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>1314</amountOfSecuritiesAcquired>
        <paymentDate>03/31/2022</paymentDate>
        <natureOfPayment>Compensation</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <acquiredDate>05/17/2022</acquiredDate>
        <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>186</amountOfSecuritiesAcquired>
        <paymentDate>05/17/2022</paymentDate>
        <natureOfPayment>Compensation</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Matthew Calderone</name>
          <address>
            <com:street1>8283 Greensboro Drive</com:street1>
            <com:city>McLean</com:city>
            <com:stateOrCountry>VA</com:stateOrCountry>
            <com:zipCode>22102</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <saleDate>03/14/2024</saleDate>
        <amountOfSecuritiesSold>1500</amountOfSecuritiesSold>
        <grossProceeds>219765.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>03/15/2024</noticeDate>
        <planAdoptionDates>
          <planAdoptionDate>12/14/2023</planAdoptionDate>
        </planAdoptionDates>
        <signature>/s/ Ryan Riviere, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Matthew Calderone</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 4085}]
text: 144
  0001946523
  XXXXXXXX
  LIVE
  0001443646
  Booz Allen Hamilton Holding Corp
  001-34972
  8283 GREENSBORO DRIVE
  MCLEAN
  VA
  22102
  703-902-5000
  Calderone Matthew
  Officer
  Class A
  Fidelity Brokerage Services LLC
  900 Salem Street
  Smithfield
  RI
  02917
  1500
  216315.00
  129745860
  03/15/2024
  NYSE
  Class A
  03/31/2022
  Restricted Stock Vesting
  Issuer
  N
  1314
  03/31/2022
  Compensation
  Class A
  05/17/2022
  Restricted Stock Vesting
  Issuer
  N
  186
  05/17/2022
  Compensation
  N
  Matthew Calderone
  8283 Greensboro Drive
  McLean
  VA
  22102
  Class A
  03/14/2024
  1500
  219765.00
  03/15/2024
  12/14/2023
  /s/ Ryan Riviere, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Matthew Calderone