<SEC-DOCUMENT>0001104659-11-047928.txt : 20110819
<SEC-HEADER>0001104659-11-047928.hdr.sgml : 20110819
<ACCEPTANCE-DATETIME>20110819142254
ACCESSION NUMBER:		0001104659-11-047928
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20110819
FILED AS OF DATE:		20110819
DATE AS OF CHANGE:		20110819

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DEPASQUALE MICHAEL W
		CENTRAL INDEX KEY:			0001246138

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13463
		FILM NUMBER:		111047043

	MAIL ADDRESS:	
		STREET 1:		1285 CORPORATE CENTER DR
		STREET 2:		STE 175
		CITY:			EAGAN
		STATE:			MN
		ZIP:			55121

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BIO KEY INTERNATIONAL INC
		CENTRAL INDEX KEY:			0001019034
		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER COMMUNICATIONS EQUIPMENT [3576]
		IRS NUMBER:				411761861
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3349 HIGHWAY 138
		STREET 2:		BUIDING D, SUITE B
		CITY:			WALL
		STATE:			NJ
		ZIP:			07719
		BUSINESS PHONE:		6516870414

	MAIL ADDRESS:	
		STREET 1:		3349 HIGHWAY 138
		STREET 2:		BUIDING D, SUITE B
		CITY:			WALL
		STATE:			NJ
		ZIP:			07719

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SAC TECHNOLOGIES INC
		DATE OF NAME CHANGE:	19961115
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0304</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2011-08-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001019034</issuerCik>
        <issuerName>BIO KEY INTERNATIONAL INC</issuerName>
        <issuerTradingSymbol>BKYI.OB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001246138</rptOwnerCik>
            <rptOwnerName>DEPASQUALE MICHAEL W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BIO-KEY INTERNATIONAL, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>3349 HIGHWAY 138, BUILDING D, SUITE A</rptOwnerStreet2>
            <rptOwnerCity>WALL</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07719</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Pres. &amp; CEO &amp; Director</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2011-08-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>25000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.118</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1126938</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ Michael W. Depasquale</signatureName>
        <signatureDate>2011-08-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
