-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 xOBRRY2XdRxPzUpjGLIjEw==

<SEC-DOCUMENT>0000842023-05-000031.txt : 20050822
<SEC-HEADER>0000842023-05-000031.hdr.sgml : 20050822
<ACCEPTANCE-DATETIME>20050822134523
ACCESSION NUMBER:		0000842023-05-000031
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050818
FILED AS OF DATE:		20050822
DATE AS OF CHANGE:		20050822

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MELSEN GREGORY J
		CENTRAL INDEX KEY:			0001194908

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-17272
		FILM NUMBER:		051040504

	MAIL ADDRESS:	
		STREET 1:		10801 NESBITT AVE SOUTH
		CITY:			BLOOMINGTON
		STATE:			MN
		ZIP:			55437

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TECHNE CORP /MN/
		CENTRAL INDEX KEY:			0000842023
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				411427402
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		614 MCKINLEY PL N E
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55413
		BUSINESS PHONE:		6123798854

	MAIL ADDRESS:	
		STREET 1:		614 MCKINLEY PLACE NE
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55413
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-08-18</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000842023</issuerCik>
        <issuerName>TECHNE CORP /MN/</issuerName>
        <issuerTradingSymbol>TECH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001194908</rptOwnerCik>
            <rptOwnerName>MELSEN GREGORY J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>10801 NESBITT AVE SOUTH</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BLOOMINGTON</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55437</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP Finance and CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Nonqualified Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>51.6</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2005-08-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>426</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2005-08-18</value>
            </exerciseDate>
            <expirationDate>
                <value>2012-08-17</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>426</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>426</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeHolding>
            <securityTitle>
                <value>Nonqualified Stock Options</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>39.53</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2007-12-17</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2014-12-16</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>17413</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>17413</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Incentive stock option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>39.53</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2007-12-17</value>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2014-12-16</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>7587</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7587</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Exercisable 5,471 on 12/17/2005; 5,471 on 12/17/2006 and 6,471 on 12/17/2007</footnote>
        <footnote id="F2">Exercisable 2,529 on 12/17/2005; 2,529 on 12/17/2006 and 2,529 on 12/17/2007</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Gregory J. Melsen</signatureName>
        <signatureDate>2005-08-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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