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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Gtb4g+UfD4fGjAHado/9FVHFM2aaZSB7fBfywa0ZLhWyn4wEYlt2Cspyx59qGVM/
 bXcy55w7wgtCsvZjif/Nug==

<SEC-DOCUMENT>0000353394-03-000042.txt : 20030721
<SEC-HEADER>0000353394-03-000042.hdr.sgml : 20030721
<ACCEPTANCE-DATETIME>20030721164610
ACCESSION NUMBER:		0000353394-03-000042
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030718
FILED AS OF DATE:		20030721

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FOLEY DONALD H
		CENTRAL INDEX KEY:			0001119868

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-12771
		FILM NUMBER:		03794900

	BUSINESS ADDRESS:	
		STREET 1:		SCIENCE APPLICATIONS INTERNATIONAL CORP
		STREET 2:		10260 CAMPUS POINT DRIVE
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SCIENCE APPLICATIONS INTERNATIONAL CORP
		CENTRAL INDEX KEY:			0000353394
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-ENGINEERING, ACCOUNTING, RESEARCH, MANAGEMENT [8700]
		IRS NUMBER:				953630868
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0131

	BUSINESS ADDRESS:	
		STREET 1:		10260 CAMPUS POINT DR
		STREET 2:		LEGAL DEPT
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
		BUSINESS PHONE:		8588266000

	MAIL ADDRESS:	
		STREET 1:		LEGAL DEPT
		STREET 2:		10260 CAMPUS POINT DR
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>fol317.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0101</schemaVersion>

    <documentType>4</documentType>
	<periodOfReport>2003-07-18</periodOfReport>
	<notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000353394</issuerCik>
        <issuerName>SCIENCE APPLICATIONS INTERNATIONAL CORP</issuerName>
        <issuerTradingSymbol>N/A</issuerTradingSymbol>
	</issuer>
	<reportingOwner>
		<reportingOwnerId>
            <rptOwnerCik>0001119868</rptOwnerCik>
            <rptOwnerName>FOLEY DONALD H</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
			<isDirector>1</isDirector>
			<isOfficer>1</isOfficer>
			<isTenPercentOwner>0</isTenPercentOwner>
			<isOther>0</isOther>
			<officerTitle>EXECUTIVE VICE PRESIDENT</officerTitle>
		</reportingOwnerRelationship>
	</reportingOwner>
	<nonDerivativeSecurity>
		<securityTitle>
			<value>Class A Common Stock</value>
		</securityTitle>
		<transactionDate>
			<value>2003-07-18</value>
		</transactionDate>
		<transactionCoding>
			<transactionFormType>4</transactionFormType>
			<transactionCode>S</transactionCode>
			<equitySwapInvolved>0</equitySwapInvolved>
		</transactionCoding>
		<transactionAmounts>
			<transactionShares>
				<value>6000</value>
			</transactionShares>
			<transactionValue>
				<value>30.5000</value>
			</transactionValue>
			<transactionAcquiredDisposedCode>
				<value>D</value>
			</transactionAcquiredDisposedCode>
		</transactionAmounts>
		<postTransactionAmounts>
			<sharesOwnedFollowingTransaction>
				<value>31974</value>
				<footnoteId id="F1"/>
			</sharesOwnedFollowingTransaction>
		</postTransactionAmounts>
		<ownershipNature>
			<directOrIndirectOwnership>
				<value>D</value>
			</directOrIndirectOwnership>
			<natureOfOwnership>
				<value/>
			</natureOfOwnership>
		</ownershipNature>
	</nonDerivativeSecurity>
	<footnotes>
		<footnote id="F1">The reporting person also indirectly beneficially owns 7,981 shares of SAIC Class A common stock through the SAIC Employee Stock Retirement Plan and 908 shares of SAIC Class A common stock through the SAIC 401(k) plan.  During the period of April 1, 2003 through June 30, 2003, the reporting person acquired 271 shares of SAIC Class A Common Stock under the SAIC 401(k) Plan.  The balance is pursuant to the reporting person's most recent account statement available.</footnote>
	</footnotes>
	<ownerSignature>
		<signatureName>By: N. Walker, Attorney-in-fact, for</signatureName>
		<signatureDate>2003-07-21</signatureDate>
	</ownerSignature>
</ownershipDocument>

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