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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,
 VCSZ54PYdC2UIb3+hMY37DnCb9DPCsT5OLIPSuVlbNYa3LbJ4aYa9SBYuCmJ0XI1
 ciARR+5MgKryQ0SEOfvFCg==

<SEC-DOCUMENT>0001181431-03-021435.txt : 20030902
<SEC-HEADER>0001181431-03-021435.hdr.sgml : 20030901
<ACCEPTANCE-DATETIME>20030902182401
ACCESSION NUMBER:		0001181431-03-021435
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030731
FILED AS OF DATE:		20030902

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ANSYS INC
		CENTRAL INDEX KEY:			0001013462
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				043219960
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		275 TECHNOLOGY DRIVE, SOUTHPOINTE
		CITY:			CANONSBURG
		STATE:			PA
		ZIP:			15317
		BUSINESS PHONE:		4127643304

	MAIL ADDRESS:	
		STREET 1:		275 TECHNOLOGY DRIVE, SOUTHPOINTE
		CITY:			CANONSBURG
		STATE:			PA
		ZIP:			15317

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SHIELDS MARIA T
		CENTRAL INDEX KEY:			0001199441

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20853
		FILM NUMBER:		03877212

	MAIL ADDRESS:	
		STREET 1:		275 TECHNOLOGY DRIVE
		CITY:			CONONSBURG
		STATE:			PA
		ZIP:			15317
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd17546.xml
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-07-31</periodOfReport><notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0001013462</issuerCik>
        <issuerName>ANSYS INC</issuerName>
        <issuerTradingSymbol>ANSS</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001199441</rptOwnerCik>
            <rptOwnerName>SHIELDS MARIA T</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>SOUTHPOINTE</rptOwnerStreet1>
            <rptOwnerStreet2>275 TECHNOLOGY DRIVE</rptOwnerStreet2>
            <rptOwnerCity>CANONSBURG</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode>15317</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>CFO</officerTitle></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common Stock</value><footnoteId id="F1"/></securityTitle><transactionDate><value>2003-07-31</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>J</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F1"/></transactionCoding><transactionAmounts><transactionShares><value>246</value></transactionShares><transactionPricePerShare><value>15.895</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>5395</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirect
Ownership></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><footnotes><footnote id="F1">Acquired through ANSYS Employee Stock Purchase Plan</footnote></footnotes><ownerSignature><signatureName>Maria T. Shields, attorney-in-fact</signatureName><signatureDate>2003-09-02</signatureDate></ownerSignature></ownershipDocument>



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