-----BEGIN PRIVACY-ENHANCED MESSAGE-----
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,
 RPvGBgA8tB5tTJQu8psqggy7AWJ5mtZG+2FB7wf/3N4eZ5NMd8eB0nr1vu9FfAEr
 4sRk9Lvei28tlWlz2r+tqA==

<SEC-DOCUMENT>0000353394-03-000002.txt : 20030512
<SEC-HEADER>0000353394-03-000002.hdr.sgml : 20030512
<ACCEPTANCE-DATETIME>20030509181109
ACCESSION NUMBER:		0000353394-03-000002
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030509
FILED AS OF DATE:		20030512

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DESCH MATTHEW J
		CENTRAL INDEX KEY:			0001178032

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-12771
		FILM NUMBER:		03691371

	BUSINESS ADDRESS:	
		STREET 1:		C/O SAIC
		STREET 2:		10260 CAMPUS POINT DR M/S F3
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
		BUSINESS PHONE:		8588267320

	MAIL ADDRESS:	
		STREET 1:		C/O SAIC
		STREET 2:		10260 CAMPUS POINT DR M/S F3
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>des301.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0101</schemaVersion>

<documentType>4</documentType>
	<periodOfReport>2003-05-09</periodOfReport>
	<notSubjectToSection16>0</notSubjectToSection16>
<issuer>		<issuerCik>0000353394</issuerCik>
        <issuerName>SCIENCE APPLICATIONS INTERNATIONAL CORP</issuerName>
<issuerTradingSymbol>N/A</issuerTradingSymbol>
	</issuer>
	<reportingOwner>
		<reportingOwnerId>
			<rptOwnerCik>0001178032</rptOwnerCik>
            <rptOwnerName>DESCH MATTHEW J</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>CEO TELCORDIA TECHNOLOGIES INC</officerTitle>
		</reportingOwnerRelationship>
	</reportingOwner>
	<derivativeSecurity>
		<securityTitle>
			<value>Stock Option (Right to Buy)</value>
			<footnoteId id="F1"/>
		</securityTitle>
		<conversionOrExercisePrice>
			<value>29.0200</value>
		</conversionOrExercisePrice>
		<transactionDate>
			<value>2003-05-09</value>
		</transactionDate>
		<transactionCoding>
			<transactionFormType>4</transactionFormType>
			<transactionCode>A</transactionCode>
			<equitySwapInvolved>0</equitySwapInvolved>
		</transactionCoding>
		<transactionAmounts>
			<transactionShares>
				<value>4070</value>
			</transactionShares>
			<transactionValue>
				<value>0</value>
			</transactionValue>
			<transactionAcquiredDisposedCode>
				<value>A</value>
			</transactionAcquiredDisposedCode>
		</transactionAmounts>
		<exerciseDate>
			<value>2004-05-09</value>
		</exerciseDate>
		<expirationDate>
			<value>2008-05-08</value>
		</expirationDate>
		<underlyingSecurity>
			<underlyingSecurityTitle>
				<value>Class A Common Stock</value>
			</underlyingSecurityTitle>
			<underlyingSecurityShares>
				<value>4070</value>
			</underlyingSecurityShares>
		</underlyingSecurity>
		<postTransactionAmounts>
			<sharesOwnedFollowingTransaction>
				<value>4070</value>
			</sharesOwnedFollowingTransaction>
		</postTransactionAmounts>
		<ownershipNature>
			<directOrIndirectOwnership>
				<value>D</value>
			</directOrIndirectOwnership>
			<natureOfOwnership>
				<value/>
			</natureOfOwnership>
		</ownershipNature>
	</derivativeSecurity>
	<footnotes>
		<footnote id="F1">The option is exercisable according to the following annual vesting schedule:  20% in years 1, 2 and 3, and 40% in year 4.</footnote>
	</footnotes>
	<ownerSignature>
		<signatureName>By: N. Walker, Attorney-in-fact, for</signatureName>
		<signatureDate>2003-05-09</signatureDate>
	</ownerSignature>
</ownershipDocument>

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