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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Fbeebwx+sugXJPu+YU/UHQg/C5Ka+w01Jl6GSyHzqpXj1xa0q3/ojjVNfLoWZaRb
 ic14H3ICYrr9al26eQThcg==

<SEC-DOCUMENT>0000897101-04-001781.txt : 20040902
<SEC-HEADER>0000897101-04-001781.hdr.sgml : 20040902
<ACCEPTANCE-DATETIME>20040902105717
ACCESSION NUMBER:		0000897101-04-001781
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040901
FILED AS OF DATE:		20040902
DATE AS OF CHANGE:		20040902

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NORTHERN TECHNOLOGIES INTERNATIONAL CORP
		CENTRAL INDEX KEY:			0000875582
		STANDARD INDUSTRIAL CLASSIFICATION:	CONVERTED PAPER & PAPERBOARD PRODS (NO CONTAINERS/BOXES) [2670]
		IRS NUMBER:				410857886
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0831

	BUSINESS ADDRESS:	
		STREET 1:		6680 N HIGHWAY 49
		CITY:			LINO LAKES
		STATE:			MN
		ZIP:			55014
		BUSINESS PHONE:		6127841250

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NORTHERN INSTRUMENTS CORP
		DATE OF NAME CHANGE:	19930328

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Singh Ronnie A
		CENTRAL INDEX KEY:			0001302083

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11038
		FILM NUMBER:		041012695

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		216-595-1740

	MAIL ADDRESS:	
		STREET 1:		12840 FAIRHILL ROAD
		CITY:			SHAKER HEIGHTS
		STATE:			OH
		ZIP:			44120
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>nti044094singh_3ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2004-09-01</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000875582</issuerCik>
        <issuerName>NORTHERN TECHNOLOGIES INTERNATIONAL CORP</issuerName>
        <issuerTradingSymbol>NTI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001302083</rptOwnerCik>
            <rptOwnerName>Singh Ronnie A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>12840 FAIRHILL ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>APT 27</rptOwnerStreet2>
            <rptOwnerCity>SHAKER HEIGHTS</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>44120</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President Int'l Tech Serv</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>Ronnie A Singh</signatureName>
        <signatureDate>2004-08-26</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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