-----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,
 DvxUUBHGRShmodNS5zRlEgvj5iK66p2S9JKx4ZTQ5i0bns3gQOSx5rhoAiOQ2/Zl
 nYsvHvgCCHyPqxNb68ICRQ==

<SEC-DOCUMENT>0001166110-03-000001.txt : 20030801
<SEC-HEADER>0001166110-03-000001.hdr.sgml : 20030801
<ACCEPTANCE-DATETIME>20030801111306
ACCESSION NUMBER:		0001166110-03-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030801
FILED AS OF DATE:		20030801

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMERISOURCEBERGEN CORP
		CENTRAL INDEX KEY:			0001140859
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-DRUGS PROPRIETARIES & DRUGGISTS' SUNDRIES [5122]
		IRS NUMBER:				233079390
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		1300 MORRIS DRIVE, SUITE 100
		CITY:			CHESTERBROOK
		STATE:			PA
		ZIP:			19087-5594
		BUSINESS PHONE:		6107277000

	MAIL ADDRESS:	
		STREET 1:		1300 MORRIS DRIVE, SUITE 100
		CITY:			CHESTERBROOK
		STATE:			PA
		ZIP:			19087-5594

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WILSON J LAWRENCE
		CENTRAL INDEX KEY:			0001166110

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-16671
		FILM NUMBER:		03816730

	BUSINESS ADDRESS:	
		STREET 1:		175 STRAFFORD AVE
		STREET 2:		STE ONE
		CITY:			WAYNE
		STATE:			PA
		ZIP:			19087
		BUSINESS PHONE:		203 461-7500

	MAIL ADDRESS:	
		STREET 1:		175 STRAFFORD AVE
		STREET 2:		STE ONE
		CITY:			WAYNE
		STATE:			PA
		ZIP:			19087
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-08-01</periodOfReport>
    <issuer>
        <issuerCik>0001140859</issuerCik>
        <issuerName>AMERISOURCEBERGEN CORP</issuerName>
        <issuerTradingSymbol>ABC</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001166110</rptOwnerCik>
            <rptOwnerName>WILSON J LAWRENCE</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1300 MORRIS DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CHESTERBROOK</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19087</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-08-01</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>248</value></transactionShares><transactionPricePerShare><value>63.09</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>12898</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature
></nonDerivativeTransaction></nonDerivativeTable><derivativeTable><derivativeHolding><securityTitle><value>Common Stock</value></securityTitle><conversionOrExercisePrice><value>0</value></conversionOrExercisePrice><exerciseDate><value>1988-08-08</value></exerciseDate><expirationDate><value>1988-08-08</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>0</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>0</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeHolding></derivativeTable><footnotes/><remarks/><ownerSignature><signatureName>William D. Sprague for J. Lawrence Wilson</signatureName><signatureDate>2003-08-01</signatureDate></ownerSignature></ownershipDocumen
t>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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