<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0603</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0000855906</cik>
        <entityName>SILICON STORAGE TECHNOLOGY INC</entityName>
        <issuerAddress>
            <street1>1020 Kifer Road</street1>
            <city>SUNNYVALE</city>
            <stateOrCountry>CA</stateOrCountry>
            <zipCode>94086</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>4087359110</issuerPhoneNumber>
        <jurisdictionOfInc>CALIFORNIA</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Bing</firstName>
                <lastName>Yeh</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Silicon Storage Technology, Inc.</street1>
                <street2>1020 Kifer Road</street2>
                <city>Sunnyvale</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94086</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Yaw Wen</firstName>
                <lastName>Hu</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Silicon Storage Technology, Inc.</street1>
                <street2>1020 Kifer Road</street2>
                <city>Sunnyvale</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94086</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Ronald</firstName>
                <lastName>Chwang</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o iD Ventures America, LLC</street1>
                <street2>5201 Great America Parkway, Suite 270</street2>
                <city>Santa Clara</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>95054</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Terry</firstName>
                <middleName>M.</middleName>
                <lastName>Nickerson</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Silicon Storage Technology, Inc.</street1>
                <street2>1020 Kifer Road</street2>
                <city>Sunnyvale</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94086</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Edward</firstName>
                <middleName>Yao-Wu</middleName>
                <lastName>Yang</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Silicon Storage Technology, Inc.</street1>
                <street2>1020 Kifer Road</street2>
                <city>Sunnyvale</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94086</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>James</firstName>
                <middleName>B.</middleName>
                <lastName>Boyd</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Silicon Storage Technology, Inc.</street1>
                <street2>1020 Kifer Road</street2>
                <city>Sunnyvale</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94086</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other Technology</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Over $100,000,000</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2010-03-08</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>true</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>58401855</totalOfferingAmount>
            <totalAmountSold>58401855</totalAmountSold>
            <totalRemaining>0</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>1</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>SILICON STORAGE TECHNOLOGY INC</issuerName>
                <signatureName>/s/James B. Boyd</signatureName>
                <nameOfSigner>James B. Boyd</nameOfSigner>
                <signatureTitle>Chief Financial Officer</signatureTitle>
                <signatureDate>2010-03-18</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>