-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 BC08OoDHwp7JY4duaW3Q7VP7u3nnlJhmLYaTJUp4UmTXnYL4fvuTXFrlfNV2AY8Q
 7jDDMv1PLxWLvOdGZdzYAA==

<SEC-DOCUMENT>0001181431-10-028935.txt : 20100524
<SEC-HEADER>0001181431-10-028935.hdr.sgml : 20100524
<ACCEPTANCE-DATETIME>20100524161858
ACCESSION NUMBER:		0001181431-10-028935
CONFORMED SUBMISSION TYPE:	D/A
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
FILED AS OF DATE:		20100524
DATE AS OF CHANGE:		20100524
EFFECTIVENESS DATE:		20100524

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Booz Allen Hamilton Holding Corp
		CENTRAL INDEX KEY:			0001443646
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		D/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-121728
		FILM NUMBER:		10854150

	BUSINESS ADDRESS:	
		STREET 1:		8283 GREENSBORO DRIVE
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22102
		BUSINESS PHONE:		703-902-5000

	MAIL ADDRESS:	
		STREET 1:		8283 GREENSBORO DRIVE
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22102

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EXPLORER HOLDING CORP
		DATE OF NAME CHANGE:	20080821
</SEC-HEADER>
<DOCUMENT>
<TYPE>D/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0704</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001443646</cik>
        <entityName>Booz Allen Hamilton Holding Corp</entityName>
        <issuerAddress>
            <street1>8283 Greensboro Drive</street1>
            <city>McLean</city>
            <stateOrCountry>VA</stateOrCountry>
            <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
            <zipCode>22102</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>703-902-5000</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
            <previousName>Explorer Holding Corporation</previousName>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <previousName>EXPLORER HOLDING CORP</previousName>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2008</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Peter</firstName>
                <lastName>Clare</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Ian</firstName>
                <lastName>Fujiyama</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Charles</firstName>
                <middleName>O.</middleName>
                <lastName>Rossotti</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Daniel</firstName>
                <middleName>F.</middleName>
                <lastName>Akerson</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Ralph</firstName>
                <middleName>W.</middleName>
                <lastName>Shrader</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Samuel</firstName>
                <middleName>R.</middleName>
                <lastName>Strickland</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>CG</firstName>
                <lastName>Appleby</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Horacio</firstName>
                <lastName>Rozanski</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>None</firstName>
                <lastName>Carlyle Partners V US, L.P.</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>1001 Pennsylvania Avenue NW</street1>
                <street2>Suite 220 South</street2>
                <city>Washington</city>
                <stateOrCountry>DC</stateOrCountry>
                <stateOrCountryDescription>DISTRICT OF COLUMBIA</stateOrCountryDescription>
                <zipCode>20004</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Philip</firstName>
                <middleName>A.</middleName>
                <lastName>Odeen</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Joseph</firstName>
                <middleName>E.</middleName>
                <lastName>Garner</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Francis</firstName>
                <middleName>J.</middleName>
                <lastName>Henry</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Lloyd</firstName>
                <middleName>W.</middleName>
                <lastName>Howell, Jr.</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Joseph</firstName>
                <lastName>Logue</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Joseph</firstName>
                <middleName>W.</middleName>
                <lastName>Mahaffee</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>John</firstName>
                <middleName>D.</middleName>
                <lastName>Mayer</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>J.</firstName>
                <middleName>Michael</middleName>
                <lastName>McConnell</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Patrick</firstName>
                <middleName>F.</middleName>
                <lastName>Peck</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8283 Greensboro Drive</street1>
                <city>McLean</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Business Services</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0001181431-09-026082</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2009-05-07</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
            <isOptionToAcquireType>true</isOptionToAcquireType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>Indefinite</totalOfferingAmount>
            <totalAmountSold>2638937</totalAmountSold>
            <totalRemaining>Indefinite</totalRemaining>
            <clarificationOfResponse>Fair market value of restricted shares granted, and shares purchased upon the exercise of options or otherwise, to date under Equity Incentive Plan; no value has been ascribed for purposes of this Form D to options granted under the Plan.</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>9</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>Booz Allen Hamilton Holding Corp</issuerName>
                <signatureName>/s/ CG Appleby</signatureName>
                <nameOfSigner>CG Appleby</nameOfSigner>
                <signatureTitle>General Counsel and Secretary</signatureTitle>
                <signatureDate>2010-05-24</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----