<SUBMISSION>
<ACCESSION-NUMBER>0001199683-03-000017
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20030527
<FILING-DATE>20030527
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>CARTER LARRY R
<CIK>0001198043
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>000-18225
<FILM-NUMBER>03720396
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>CISCO SYSTEMS INC
<CITY>SAN JOSE
<STATE>CA
<ZIP>95134-1706
</BUSINESS-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>CISCO SYSTEMS INC
<CIK>0000858877
<ASSIGNED-SIC>3576
<IRS-NUMBER>770059951
<STATE-OF-INCORPORATION>CA
<FISCAL-YEAR-END>0731
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>170 WEST TASMAN DR
<CITY>SAN JOSE
<STATE>CA
<ZIP>95134-1706
<PHONE>4085264000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>225 WEST TASMAN DR
<CITY>SAN JOSE
<STATE>CA
<ZIP>95134-1706
</MAIL-ADDRESS>
</ISSUER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgardoc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0101</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2003-05-27</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000858877</issuerCik>
        <issuerName>CISCO SYSTEMS INC</issuerName>
        <issuerTradingSymbol>CSCO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001198043</rptOwnerCik>
            <rptOwnerName>CARTER LARRY R</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>Senior VP</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeSecurity>
        <securityTitle>
            <value>Common Stock</value>
        </securityTitle>
        <transactionDate>
            <value>2003-05-22</value>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>M</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
        </transactionCoding>
        <transactionAmounts>
            <transactionShares>
                <value>625000</value>
            </transactionShares>
            <transactionValue>
                <value>5.6528</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>652828</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>

    <nonDerivativeSecurity>
        <securityTitle>
            <value>Common Stock</value>
        </securityTitle>
        <transactionDate>
            <value>2003-05-22</value>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>S</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
        </transactionCoding>
        <transactionAmounts>
            <transactionShares>
                <value>625000</value>
            </transactionShares>
            <transactionValue>
                <value>15.9802</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>D</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>27828</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>

    <derivativeSecurity>
        <securityTitle>
            <value>Non-Qualified Stock Option (right to buy)</value>
        </securityTitle>
        <conversionOrExercisePrice>
            <value>5.65</value>
        </conversionOrExercisePrice>
        <transactionDate>
            <value>2003-05-22</value>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>M</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
        </transactionCoding>
        <transactionAmounts>
            <transactionShares>
                <value>625000</value>
            </transactionShares>
            <transactionValue>
                <value>0</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>D</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <exerciseDate>
            <value>1998-04-04</value>
                <footnoteId id="F1"/>
        </exerciseDate>
        <expirationDate>
            <value>2006-04-04</value>
        </expirationDate>
        <underlyingSecurity>
            <underlyingSecurityTitle>
                <value>Common Stock</value>
            </underlyingSecurityTitle>
            <underlyingSecurityShares>
                <value>625000</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <postTransactionAmounts>
            <valueOwnedFollowingTransaction>
                <value>0</value>
            </valueOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </derivativeSecurity>

    <footnotes>
        <footnote id="F1">The option was originally granted on 04/04/97 for 1,125,000 shares and became exercisable for those shares as follows:  twenty-five percent (25%) of the option shares upon the Reporting Person's completion of one year of service with the issuer measured from the grant date, and the balance of the option shares in thirty-six (36) successive equal monthly installments upon the Reporting Person's completion of each of the next thirty-six (36) months of continued service with the issuer thereafter.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Larry R. Carter</signatureName>
        <signatureDate>2003-05-27</signatureDate>
    </ownerSignature>

</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
