<SEC-DOCUMENT>0001199719-14-000043.txt : 20141215
<SEC-HEADER>0001199719-14-000043.hdr.sgml : 20141215
<ACCEPTANCE-DATETIME>20141215200351
ACCESSION NUMBER:		0001199719-14-000043
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20141212
FILED AS OF DATE:		20141215
DATE AS OF CHANGE:		20141215

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SYNOPSYS INC
		CENTRAL INDEX KEY:			0000883241
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				561546236
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1031

	BUSINESS ADDRESS:	
		STREET 1:		700 E MIDDLEFIELD RD
		CITY:			MOUNTAIN VIEW
		STATE:			CA
		ZIP:			94043-4033
		BUSINESS PHONE:		6509625000

	MAIL ADDRESS:	
		STREET 1:		700 E MIDDLEFIELD RD
		CITY:			MOUNTAIN VIEW
		STATE:			CA
		ZIP:			94043-4033

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CHIZEN BRUCE R
		CENTRAL INDEX KEY:			0001032834
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1130

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19807
		FILM NUMBER:		141288125

	MAIL ADDRESS:	
		STREET 1:		C/O ADOBE SYSTEMS INC
		STREET 2:		345 PARK AVENUE P O BOX 2704
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95110-2704
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgardoc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2014-12-12</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000883241</issuerCik>
        <issuerName>SYNOPSYS INC</issuerName>
        <issuerTradingSymbol>SNPS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001032834</rptOwnerCik>
            <rptOwnerName>CHIZEN BRUCE R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>700 EAST MIDDLEFIELD ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MOUNTAIN VIEW</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94043</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>2014-12-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>25000.0</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>42.7588</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>25540</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">All shares sold at the average price of $42.7588. The average price consists of:350@42.41, 200@42.415, 100@42.42, 700@42.44, 100@42.46, 300@42.47, 600@42.49, 300@42.5, 800@42.51, 1800@42.52, 300@42.53,
600@42.54, 500@42.55, 200@42.57, 300@42.6, 300@42.61, 200@42.62,400@42.64, 600@42.66, 400@42.67, 1700@42.68, 700@42.7, 300@42.71, 700@42.73, 200@42.75, 500@42.76, 700@42.77, 100@42.78,400@42.81, 100@42.82, 400@42.83, 300@42.84, 400@42.85, 500@42.86, 600@42.87, 600@42.88, 400@42.89, 700@42.9, 800@42.91,
600@42.92, 100@42.94, 200@42.95, 500@42.96, 200@42.97, 500@42.98,
200@42.99, 200@43.01, 200@43.02, 700@43.03, 150@43.04, 400@43.05,
300@43.08, 400@43.09, 100@43.165, 600@43.18, 100@43.185, 100@43.205,
300@43.25.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: Christina Escalante-Dutra pursuant POA For: Bruce R. Chizen</signatureName>
        <signatureDate>2014-12-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
