    <SEC-DOCUMENT>0000883241-21-000007-index.html : 20210218
    <SEC-HEADER>0000883241-21-000007.hdr.sgml : 20210218
    <ACCEPTANCE-DATETIME>20210218165420
    ACCESSION NUMBER:		0000883241-21-000007
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		6
    FILED AS OF DATE:		20210218
    DATE AS OF CHANGE:		20210218

    FILER:

    	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

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-19807
    		FILM NUMBER:		21650334

    	BUSINESS ADDRESS:
    		STREET 1:		690 E MIDDLEFIELD RD
    		CITY:			MOUNTAIN VIEW
    		STATE:			CA
    		ZIP:			94043
    		BUSINESS PHONE:		6505845000

    	MAIL ADDRESS:
    		STREET 1:		690 E MIDDLEFIELD RD
    		CITY:			MOUNTAIN VIEW
    		STATE:			CA
    		ZIP:			94043
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>a2021proxystatement-addlma.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: a2021proxystatement-addlma.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>p2_logosynopsystop1.jpg
    <TEXT>
    Document 2 - file: p2_logosynopsystop1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>synopsys381566-defax1x11.jpg
    <TEXT>
    Document 3 - file: synopsys381566-defax1x11.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>synopsys381566-defax2x11.jpg
    <TEXT>
    Document 4 - file: synopsys381566-defax2x11.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>synopsys381566-defax3x11.jpg
    <TEXT>
    Document 5 - file: synopsys381566-defax3x11.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>synopsys381566-defax4x11.jpg
    <TEXT>
    Document 6 - file: synopsys381566-defax4x11.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>