-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Jm0QvrgT3Ixeal7HpVQhifH0JEKbzKL8AZBZQKremErBQyM1KOQ+n0t49KqfPAQG
 oGdIPCTG0X04OBNMbJoZ3w==

<SEC-DOCUMENT>0001082030-08-000025.txt : 20080602
<SEC-HEADER>0001082030-08-000025.hdr.sgml : 20080602
<ACCEPTANCE-DATETIME>20080602151446
ACCESSION NUMBER:		0001082030-08-000025
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080529
FILED AS OF DATE:		20080602
DATE AS OF CHANGE:		20080602

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SYBASE INC
		CENTRAL INDEX KEY:			0000768262
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				942951005
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		ONE SYBASE DRIVE
		CITY:			DUBLIN
		STATE:			CA
		ZIP:			94568
		BUSINESS PHONE:		9252365000

	MAIL ADDRESS:	
		STREET 1:		ONE SYBASE DRIVE
		CITY:			DUBLIN
		STATE:			CA
		ZIP:			94568

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CHEN JOHN S
		CENTRAL INDEX KEY:			0001082030

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-16493
		FILM NUMBER:		08873653

	BUSINESS ADDRESS:	
		STREET 1:		C/O SYBASE INC
		STREET 2:		5000 HACIENDA DR
		CITY:			DUBLIN
		STATE:			OH
		ZIP:			94568
		BUSINESS PHONE:		9252365000

	MAIL ADDRESS:	
		STREET 1:		C/O SYBASE INC
		STREET 2:		5000 HACIENDA DR
		CITY:			DUBLIN
		STATE:			CA
		ZIP:			92563
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgardoc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-05-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000768262</issuerCik>
        <issuerName>SYBASE INC</issuerName>
        <issuerTradingSymbol>SYBS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001082030</rptOwnerCik>
            <rptOwnerName>CHEN JOHN S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE SYBASE DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DUBLIN</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94568-7902</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman CEO  and President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-05-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>51562</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>32</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>535196</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Transaction was completed pursuant to Rule 10b5-1 Sales Plan currently in effect</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: Julie Loosli, Attorney-in-Fact  For: John S. Chen</signatureName>
        <signatureDate>2008-06-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----