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  <font size="2" face="Times New Roman"><b>As filed with the Securities and Exchange Commission on January 23, 2007</b></font></p>
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  <font size="2" face="Times New Roman"><b>Registration No. 333-_______</b></font></p>
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  <font size="5" face="Times New Roman"><b>UNITED STATES<br> SECURITIES AND EXCHANGE COMMISSION<br> </b></font>
  <font size="3"><b>Washington, D.C. 20549</b></font></p>
  
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  <font size="5" face="Times New Roman"><b>FORM S-8</b></font></p>
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  <font size="3" face="Times New Roman"><b>REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933</b></font></p>
  
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  <font size="6" face="Times New Roman"><b>NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION</b></font></p>  </td>
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  <font size="1" face="Times New Roman"><b>(Exact   Name of Registrant as Specified in Its Charter)</b></font></p>  </td>
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  <font size="2" face="Times New Roman"><b>Delaware</b></font></p>  </td>
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    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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  <font size="2" face="Times New Roman"><b>41-0857886</b></font></p>  </td>
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  <font size="1" face="Times New Roman"><b>(State or   Other Jurisdiction of <BR>Incorporation or Organization)</b></font></p>  </td>
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  <font size="1" face="Times New Roman"><b>(I.R.S.   Employer<br>   Identification Number)</b></font></p>  </td>
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  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
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  <font size="2" face="Times New Roman"><b>4201 Woodland Road</b></font></p>  </td>
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  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
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  <font size="2" face="Times New Roman"><b>Circle Pines, MN&#160; 55014</b></font></p>  </td>
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  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
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  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
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  <font size="2" face="Times New Roman"><b>(763)-225-6637</b></font></p>  </td>
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  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
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  <font size="1" face="Times New Roman"><b>(Address   of Registrant&#146;s Principal Executive Office) (Zip Code)</b></font></p>  </td>
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    <p  align="center"><font size="5" face="Times New Roman"><b>Northern   Technologies International Corporation<br>   Employee Stock Purchase Plan</b></font></p>  </td>
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  <font size="1" face="Times New Roman"><b>(Full   title of the plan)</b></font></p>  </td>
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  <font size="2" face="Times New Roman"><b>Matthew C. Wolsfeld</b></font></p>  </td>
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  <font size="2" face="Times New Roman"><b>Chief Financial Officer and Corporate   Secretary</b></font></p>  </td>
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  <font size="2" face="Times New Roman"><b>Northern Technologies International   Corporation</b></font></p>  </td>
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  <font size="2" face="Times New Roman"><b>4201 Woodland Road</b></font></p>  </td>
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  <font size="2" face="Times New Roman"><b>Circle Pines, MN&#160; 55014</b></font></p>  </td>
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  <font size="2" face="Times New Roman"><b>(763)-225-6637</b></font></p>  </td>
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  <font size="1" face="Times New Roman"><b>(Name and   Address, Including Zip Code, and Telephone Number, Including Area Code, of   Agent For Service)</b></font></p>  </td>
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  <font size="2" face="Times New Roman"><b>Copies requested to:</b></font></p>  </td>
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  <font size="2" face="Times New Roman"><b>Amy E. Culbert, Esq.</b></font></p>  </td>
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  <font size="2" face="Times New Roman"><b>Oppenheimer Wolff &amp; Donnelly LLP</b></font></p>  </td>
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  <font size="2" face="Times New Roman"><b>45 South Seventh Street, Suite 3300</b></font></p>  </td>
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    <p  align="center"><font size="2" face="Times New Roman"><b>Minneapolis, Minnesota 55402-1509</b></font></p>  </td>
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  <font size="2" face="Times New Roman"><b>(612) 607-7287</b></font></p>  </td>
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  <font size="2" face="Times New Roman"><b>CALCULATION OF REGISTRATION FEE</b></font></p>
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  <font size="1" face="Times New Roman"><b>Title of   Each Class of Securities to <BR>be Registered</b></font></p>  </td>
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  <font size="1" face="Times New Roman"><b>Amount to   be<br>   Registered(1)</b></font></p>  </td>
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  <font size="1" face="Times New Roman"><b>Proposed   Maximum<br>   Offering Price Per Share(2)&nbsp;</b></font></p>  </td>
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  <font size="1" face="Times New Roman"><b>Proposed   Maximum<br>   Aggregate Offering Price(2)</b></font></p>  </td>
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  <font size="1" face="Times New Roman"><b>Amount of<br>   Registration Fee</b></font></p>  </td>
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    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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    <p style="margin-left:1em; text-indent:-1em"><font size="2" face="Times New Roman">Common Stock, par value   $0.02 per share</font></p>  </td>
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  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
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  <font size="2" face="Times New Roman">100,000   shares</font></p>  </td>
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  <font size="2" face="Times New Roman">$6.71</font></p>  </td>
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  <font size="2" face="Times New Roman">$671,000</font></p>  </td>
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  <font size="2" face="Times New Roman">$71.80</font></p>  </td>
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    <p><font size="2" face="Times New Roman">(1)</font></p>  </td>
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  <font size="2" face="Times New Roman">The number of shares of   common stock, par value $0.02 per share (&#147;Common Stock&#148;), stated above   consists of the aggregate number of shares which may be issued under the   Northern Technologies International Corporation Employee Stock Purchase Plan   (the &#147;Plan&#148;).&#160; The maximum number of   shares of Common Stock that may be issued under the Plan is subject to   adjustment in accordance with certain provisions of the Plan.&#160; Accordingly, pursuant to Rule 416 under   the Securities Act of 1933, as amended (the &#147;Securities Act&#148;), to the extent   additional shares of Common Stock may be issued or issuable as a result of a   stock split or other distribution declared at any time by the Board of   Directors while this Registration Statement is in effect, this Registration   Statement is hereby deemed to cover all such additional shares of Common   Stock.</font></p>  </td>
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  <font size="2" face="Times New Roman">(2)</font></p>  </td>
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  <font size="2" face="Times New Roman">Estimated solely for the   purpose of determining the registration fee pursuant to Rule 457(c) and   457(h) under the Securities Act.&#160; The   Plan establishes a purchase price equal to 90% of the fair market value of   the Common Stock; and therefore, the price of the shares to be issued under   the Plan is based on 90% of the average of the high and low sale prices of   the Common Stock, as reported on the American Stock Exchange&#160; on January 23, 2007.</font></p>  </td>
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  <font size="2" face="Times New Roman"><b>PART I</b></font></p>
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  <font size="2" face="Times New Roman"><b>INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</b></font></p>
  
  <p><font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The documents containing the information specified in Part&nbsp;I of Form S-8 will be sent or given to participants in the Employee Stock Purchase Plan of Northern Technologies International Corporation, a Delaware corporation (the &#147;Company&#148; or the &#147;Registrant&#148;), as specified by Rule&nbsp;428(b)(1) of the Securities Act of 1933, as amended (the &#147;Securities Act&#148;).&#160; In accordance with the instructions of Part&nbsp;I of Form S-8, such documents will not be filed with the Securities and Exchange Commission (the &#147;Commission&#148;) either as part of this Registration Statement or as prospectuses or prospectus supplements pursuant to Rule&nbsp;424 of the Securities Act.&#160; These documents and the documents incorporated by reference pursuant to Item&nbsp;3 of Part&nbsp;II of this Registration Statement, taken together, constitute a prospectus as required by Section
  10(a) of the Securities Act. </font></p>
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  <font size="2" face="Times New Roman"><b>PART II</b></font></p>
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  <font size="2" face="Times New Roman"><b>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</b></font></p>
  <p>
  <font size="2" face="Times New Roman"><b>Item 3.&#160; Incorporation of Documents by Reference</b></font></p>
  <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents previously filed by the Company with the Commission are incorporated by reference into this Registration Statement:</font></p>
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  <font size="2" face="Times New Roman">(a)</font></p>  </td>
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  <font size="2" face="Times New Roman">Annual Report on Form   10-KSB for the year ended August 31, 2006;</font></p>  </td>
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  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
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  <font size="2" face="Times New Roman">(b)</font></p>  </td>
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  <font size="2" face="Times New Roman">Quarterly Report on Form   10-QSB for the quarter ended November 30, 2006;</font></p>  </td>
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  <font size="2" face="Times New Roman">(c)</font></p>  </td>
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  <font size="2" face="Times New Roman">All other reports filed by   the Company pursuant to Sections 13(a) or 15(d) of the Securities Exchange   Act of 1934, as amended (the &#147;Exchange Act&#148;), since August 31, 2006; and</font></p>  </td>
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  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
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  <font size="2" face="Times New Roman">(d)</font></p>  </td>
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  <font size="2" face="Times New Roman">The description of the   Company&#146;s Common Stock contained in its Registration Statement on Form 10   (File No 0-19331), including any amendments or reports filed for the purpose   of updating such description.</font></p>  </td>
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  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In addition, all documents filed with the Commission by the Company (other than portions of such documents which are furnished and not filed) pursuant to Sections&nbsp;13(a), 13(c), 14 and 15(d) of the Exchange Act subsequent to the date of this Registration Statement and prior to the filing of a post-effective amendment which indicates that all securities offered hereby have been sold or which deregisters all such securities then remaining unsold, shall be deemed to be incorporated by reference in this Registration Statement and to be a part hereof from the time of filing of such documents.</font></p>
  <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Any statement contained in the documents incorporated or deemed to be incorporated by reference in this Registration Statement shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained herein or in any other subsequently filed document which also is incorporated or deemed to be incorporated by reference in this Registration Statement modifies or supersedes such statement.&#160; Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement.</font></p>
  
  
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  <p><font size="2" face="Times New Roman"><b>Item 4.&#160; Description of Securities</b></font></p>
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  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.&#160; The Company&#146;s Common Stock to be offered pursuant to this Registration Statement has been registered under Section 12 of the Exchange Act as described in Item 3 of this Part II.</font></p>
  <p>
  <font size="2" face="Times New Roman"><b>Item 5.&#160; Interests of Named Experts and Counsel</b></font></p>
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  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.</font></p>
  <p>
  <font size="2" face="Times New Roman"><b>Item 6.&#160; Indemnification of Directors and Officers</b></font></p>
  <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under the Delaware General Corporation Law (&#147;DGCL&#148;), a corporation may indemnify any person who was or is a party or is threatened to be made a party to an action (other than an action by or in the right of the corporation) by reason of the fact that such person is or was a director, officer, employee or agent of the corporation, or is or was serving at the corporation&#146;s request, as a director, officer, employee or agent of another corporation or other enterprise, against expenses (including attorneys&#146; fees) that are actually and reasonably incurred by such person, and judgments, fines and amounts paid in settlement of such action, provided that such person acted in good faith and in a manner the person reasonably believed to be in or not opposed to the corporation&#146;s best interests and, with respect to any criminal action or proceeding, had no reasonable cause to believe that the
  person&#146;s conduct was unlawful.</font></p>
  <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Although the DGCL permits a corporation to indemnify any person referred to above against expenses in connection with the defense or settlement of an action by or in the right of the corporation, provided that such person acted in good faith and in a manner the person reasonably believed to be in or not opposed to the corporation&#146;s best interests, if such person has been judged liable to the corporation, indemnification is only permitted to the extent that the Court of Chancery (or the court in which the action was brought) determines that, despite the adjudication of liability, such person is entitled to indemnity for such expenses as the court deems proper.&#160; The determination as to whether a person seeking indemnification has met the required standard of conduct is to be made, with respect to a person who is a director or officer at the time of such determination, (1) by a majority vote of the
  
  directors who are not parties to such action, suit or proceeding, even though less than a quorum, or (2) by a committee of such directors designated by majority vote of such directors, even though less than a quorum, or (3) if there are no such directors or if such directors so direct, by independent legal counsel in a written opinion, or (4) by the stockholders.&#160; The DGCL also provides for mandatory indemnification of any present or former director or officer against expenses to the extent such person has been successful in any proceeding covered by the statute.</font></p>
  
  <p><font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In addition, the DGCL provides that, to the extent a present or former director or officer of a corporation has been successful in the defense of any action, suit or proceeding or in the defense of any claim, issue or matter therein, such person shall be indemnified against expenses actually and reasonably incurred in connection therewith; that indemnification provided for by the DGCL shall not be deemed exclusive of any other rights to which the indemnified party may be entitled; and that the scope of indemnification extends to directors, officers, employees or agents of a constituent corporation absorbed in a consolidation or merger and persons serving in that capacity at the request of the constituent corporation for another.</font></p>
  <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The DGCL also allows a corporation to purchase and maintain insurance on behalf of a director or officer of the corporation against any liability asserted against or incurred by such person in any such capacity or arising out of such person&#146;s status as such, whether or not the corporation would have the power to indemnify such person against such liabilities under the DGCL.</font></p>
  <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Article VII
  of the Company&#146;s Certificate of Incorporation, as amended, provides that
  each director and officer, past or present, of the Company, and their respective
  heirs, administrators and executors, shall be indemnified by the Company in accordance with, and to the fullest extent provided by, the provisions of the Delaware General Corporation Law as they may from time to time be amended.</font></p>
  
  <div style="page-break-before:always"></div>
  <PAGE>
  <br>
  
  <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Additionally, Article VII of the Company&#146;s Amended and Restated Bylaws provides that the Company shall indemnify any director, officer or employee against any and all judgments, penalties, fines, amounts paid in settlement and expense incurred or imposed in connection with, or which result from, any proceeding in which such person is or may become involved by reason of being a director, officer or employee.&#160; A proceeding means any actual, threatened or completed action, suit, arbitration, alternative dispute resolution mechanism, investigation, administrative hearing or other formal claim that could result or has resulted in personal liability, whether civil, criminal, administrative or investigative.&#160; In connection with a proceeding, the Company may advance expenses to the director, officer or employee upon receipt of an undertaking by or on behalf of such person to repay such advance if
  it shall ultimately be determined that such person is not entitled to indemnification by the Company.&#160; Article VIII gives the Company the express authority to enter into such agreements as the board of directors deems appropriate for the indemnification of present of future directors and officers of the Company.&#160; </font></p>
  
  <p><font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Company maintains directors&#146; and officers&#146; liability insurance, including a reimbursement policy in favor of the Company.</font></p>
  <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The foregoing represents a summary of the general effect of the Delaware General Corporation Law, the Company&#146;s Certificate of Incorporation, as amended, the Company&#146;s Amended and Restated Bylaws, and any other Company contracts or arrangements relating to indemnification, and is qualified in its entirety by reference to, the terms and provisions of the Delaware General Corporation Law, the Company&#146;s Certificate of Incorporation, as amended, the Company&#146;s Amended and Restated Bylaws, and such other Company contracts or arrangements relating to indemnification.</font></p>
  <p>
  <font size="2" face="Times New Roman"><b>Item 7.&#160; Exemption from Registration Claimed.</b></font></p>
  <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.</font></p>
  <p>
  <font size="2" face="Times New Roman"><b>Item 8.&#160; Exhibits</b></font></p>
  <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following exhibits are filed with or incorporated by reference into this Registration Statement:</font></p>
  <table align="center"  border="0" style="border-collapse:collapse" cellspacing="0"  cellpadding="0"  width="100%">
  
   <tr>
    <td width="5%" valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td width="10%" valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman"><b>Exhibit   No.</b></font></p>  </td>
    <td width="3%" valign="top">
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td width="82%" valign="top">
    <p>
  <font size="1" face="Times New Roman"><b>Description</b></font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <hr align="center" width="100%" size="1" noshade color=black>
  
    </td>
    <td  valign="top">
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  valign="top">
    <hr size="1" width="100%" noshade color=black>
  
    </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em"><font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">4.1</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">Form of the Company&#146;s   Common Stock Certificate (incorporated by reference to Exhibit 4.1 to the   Company&#146;s Registration Statement on Form 10 (File No 0-19331))</font></p>  </td>
   </tr>
   <tr>
     <td valign="top"><p style="margin-left:1em; text-indent:-1em"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p align="center" style="margin-left:1em; text-indent:-1em"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">4.2</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">Restated Certificate of   Incorporation of Northern Technologies International Corporation   (incorporated by reference to Exhibit 3.1 to the Company&#146;s Form 10-KSB for   the fiscal year ended August 31, 2006 (File No 001-11038))</font></p>  </td>
   </tr>
   <tr>
     <td valign="top"><p style="margin-left:1em; text-indent:-1em"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p align="center" style="margin-left:1em; text-indent:-1em"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">4.3</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">Amended and Restated   Bylaws of Northern Technologies International Corporation (incorporated by   reference to Exhibit 3.1 to the Company&#146;s Quarterly Report on Form 10-KSB for   the fiscal quarter ended November 30, 2006 (File No. 001-11038))</font></p>  </td>
   </tr>
   <tr>
     <td valign="top"><p style="margin-left:1em; text-indent:-1em"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p align="center" style="margin-left:1em; text-indent:-1em"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">5.1</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">Opinion of Oppenheimer   Wolff &amp; Donnelly LLP (Filed herewith)</font></p>  </td>
   </tr>
   <tr>
     <td valign="top"><p style="margin-left:1em; text-indent:-1em"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p align="center" style="margin-left:1em; text-indent:-1em"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">23.1</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">Consent of Independent   Registered Public Accounting Firm (Filed herewith)</font></p>  </td>
   </tr>
   <tr>
     <td valign="top"><p style="margin-left:1em; text-indent:-1em"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p align="center" style="margin-left:1em; text-indent:-1em"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em"><font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">23.2</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">Consent of Oppenheimer   Wolff &amp; Donnelly LLP (included as part of Exhibit 5.1)</font></p>  </td>
   </tr>
   <tr>
     <td valign="top"><p style="margin-left:1em; text-indent:-1em"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p align="center" style="margin-left:1em; text-indent:-1em"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">24.1</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">Power of Attorney   (included on the signature page to this Registration Statement)</font></p>  </td>
   </tr>
  </table>
  
  
  <div style="page-break-before:always"></div>
  <PAGE>
  <br>
  
  <p>
  <font size="2" face="Times New Roman"><b>Item 9.&#160; Undertakings</b></font></p>
  <table align="center"  border="0" style="border-collapse:collapse" cellspacing="0"  cellpadding="0"  width="100%">
  
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">(a)</font></p>  </td>
    <td  colspan="3"  valign="top">
    <p>
  <font size="2" face="Times New Roman">The undersigned Company   hereby undertakes as follows to:</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  colspan="3"  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em"><font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">(1)</font></p>  </td>
    <td  colspan="2" valign="top">
    <p>
  <font size="2" face="Times New Roman">file, during any period in   which it offers or sells securities, a post-effective amendment to this   registration statement to:</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  colspan="2" valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  colspan="3"  valign="top">
    <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;include   any prospectus required by section 10(a)(3) of the Securities Act;</font></p>  </td>
   </tr>
   <tr>
    <td width="5%" valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td width="5%" valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td width="5%" valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td width="5%" valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td width="80%" valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  colspan="3"  valign="top">
    <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;reflect   in the prospectus any facts or events which, individually or together,   represent a fundamental change in the information in the registration   statement. Notwithstanding the foregoing, any increase or decrease in volume   of securities offered (if the total dollar value of securities offered would   not exceed that which was registered) any deviation from the low or high end   of the estimated maximum offering range may be reflected in the form of   prospectus filed with the Commission pursuant to Rule 424(b) if, in the   aggregate, the changes in volume and price represent no more than a 20   percent change in the maximum aggregate offering price set forth in the   &#147;Calculation of Registration Fee&#148; table in the effective registration   statement; and</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em"><font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  colspan="3"  valign="top">
    <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;include   any additional or changed material information on the plan of distribution.</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  colspan="4"  valign="top">
    <p>
  <font size="2" face="Times New Roman"><u>provided</u>, <u>however</u>, that paragraphs (a)(1)(i)   and (a)(1)(ii) do not apply if the information required to be included in a   post-effective amendment by those paragraphs is included in the periodic   reports filed by the Company under the Exchange Act that are incorporated by   reference into this Registration Statement.</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  colspan="4"  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">(2)</font></p>  </td>
    <td  colspan="2" valign="top">
    <p>
  <font size="2" face="Times New Roman">for determining liability   under the Securities Act, each post-effective amendment will be treated as a   new registration statement of the securities offered, and the offering of the   securities at that time to be the initial <i>bona   fide</i> offering thereof.</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em"><font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  colspan="2" valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">(3)</font></p>  </td>
    <td  colspan="2" valign="top">
    <p>
  <font size="2" face="Times New Roman">file a post-effective   amendment to remove from registration any of the securities that remain   unsold at the end of the offering.</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  colspan="2" valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
   </tr>
   <tr>
    <td  colspan="5"  valign="top">
    <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Insofar   as indemnification for liabilities arising under the Securities Act may be   permitted to directors, officers and controlling persons of the Company   pursuant to the foregoing provisions, or otherwise, the Company has been   advised that in the opinion of the Securities and Exchange Commission such   indemnification is against public policy as expressed in the Act and is,   therefore, unenforceable.&#160; In the   event that a claim for indemnification against such liabilities (other than   the payment by the Company of expenses incurred or paid by a director,   officer or controlling person of the Company in the successful defense of any   action, suit or proceeding) is asserted by such director, officer or   controlling person in connection with the securities being registered, the   Company will, unless in the opinion of its
  counsel the matter has been   settled by controlling precedent, submit to a court of appropriate   jurisdiction the question whether such indemnification by it is against public   policy as expressed in the Securities Act and will be governed by the final   adjudication of such issue.</font></p>  </td>
   </tr>
  </table>
  
  
  <div style="page-break-before:always"></div>
  <PAGE>
  <br>
  
  <p  align="center"><font size="2" face="Times New Roman"><b>SIGNATURES</b></font></p>
  <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Circle Pines, State of Minnesota, on January 23, 2007.</font></p>
  <table align="center"  border="0" style="border-collapse:collapse" cellspacing="0"  cellpadding="0"  width="100%">
  
   <tr>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  colspan="2" valign="top">
    <p>
  <font size="2" face="Times New Roman"><b>NORTHER   TECHNOLOGIES INTERNATIONAL CORPORATION</b></font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  colspan="2" valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  colspan="2" valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
   </tr>
   <tr>
    <td width="60%" valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td width="5%" valign="top">
    <p>
  <font size="2" face="Times New Roman">By:</font></p>  </td>
    <td width="35%" valign="top">
    <p>
  <font size="2" face="Times New Roman">/s/ G. Patrick Lynch</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <hr size="1" width="100%" noshade color=black>
  
    </td>
   </tr>
   <tr>
    <td  valign="top">
    <p><font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">G. Patrick Lynch</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">President and Chief   Executive Officer</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">(principal executive   officer)</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">By:</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">/s/ Matthew C. Wolsfeld,   CPA</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <hr size="1" width="100%" noshade color=black>
  
    </td>
   </tr>
   <tr>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">Matthew C. Wolsfeld, CPA</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p><font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">Chief Financial Officer   and Corporate Secretary</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">(principal financial and   accounting officer)</font></p>  </td>
   </tr>
  </table>
  
  <div style="page-break-before:always"></div>
  <PAGE>
  <br>
  
  <p  align="center">
  <font size="2" face="Times New Roman"><b>POWER OF ATTORNEY</b></font></p>
  <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Each person whose signature appears below hereby authorizes and appoints G. Patrick Lynch and Matthew C. Wolsfeld, CPA, or either of them, his or her true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any and all amendments (including post-effective amendments) to this Registration Statement, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and
  agents or any of them, their, or his or her, substitute or substitutes, may lawfully do or cause to be done by virtue hereof.</font></p>
  <p>
  <font size="2" face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.</font></p>
  <table align="center"  border="0" style="border-collapse:collapse" cellspacing="0"  cellpadding="0"  width="100%">
  
   <tr>
    <td width="30%" valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em"><font size="2" face="Times New Roman"><b>Signature</b></font></p>  </td>
    <td width="5%" valign="top">
    <p style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td width="30%" valign="top">
    <p  align="center">
  <font size="2" face="Times New Roman"><b>Title</b></font></p>  </td>
    <td width="5%" valign="top">
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td width="30%" valign="top">
    <p  align="center">
  <font size="2" face="Times New Roman"><b>Date</b></font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <hr size="1" width="100%" noshade color=black>
  
    </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  valign="top">
    <hr size="1" width="100%" noshade color=black>
  
    </td>
    <td  valign="top">
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  valign="top">
    <hr size="1" width="100%" noshade color=black>
  
    </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">/s/   G. Patrick Lynch</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">President   and Chief Executive Officer</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">January   23, 2007</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <hr align="center" width="100%" size="1" noshade color=black>
  
    </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">G.   Patrick Lynch</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em"><font size="2" face="Times New Roman">/s/   Matthew C. Wolsfeld, CPA</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">Chief   Financial Officer and Corporate Secretary</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">January   23, 2007</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <hr align="center" width="100%" size="1" noshade color=black>
  
    </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">Matthew   C. Wolsfeld, CPA</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">/s/   Pierre Chenu</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">Chairman   of the Board</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">January   23, 2007</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <hr align="center" width="100%" size="1" noshade color=black>
  
    </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em"><font size="2" face="Times New Roman">Pierre   Chenu</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">/s/   Donald A. Kubik, Ph.D.</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">Chief   Technology Officer and Vice Chairman of the Board</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">January   23, 2007</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <hr align="center" width="100%" size="1" noshade color=black>
  
    </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">Donald   A. Kubik, Ph.D.</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">/s/   Dr. Sunggyu Lee</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">Director</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">January   23, 2007</font></p>  </td>
   </tr>
   <tr>
    <td  valign="top">
    <hr align="center" width="100%" size="1" noshade color=black>
  
    </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em"><font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">Dr.   Sunggyu Lee</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
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    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">/s/   Mark Mayers</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">Director</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">January   23, 2007</font></p>  </td>
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  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">Mark   Mayers</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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    <p align="center" style="margin-left:1em; text-indent:-1em"><font size="2" face="Times New Roman">/s/   Dr. Ramani Narayan</font></p>  </td>
    <td  valign="top">
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  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  rowspan="3">
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  <font size="2" face="Times New Roman">Director</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">January   23, 2007</font></p>  </td>
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    </td>
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  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">Dr.   Ramani Narayan</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">/s/   Mark J. Stone</font></p>  </td>
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    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">Director</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">January   23, 2007</font></p>  </td>
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  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">Mark   J. Stone</font></p>  </td>
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    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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    <p align="center" style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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    <p style="margin-left:1em; text-indent:-1em"><font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
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    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">/s/   Dr. Barry Rosenbaum</font></p>  </td>
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    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">Director</font></p>  </td>
    <td >
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  rowspan="3">
    <p  align="center">
  <font size="2" face="Times New Roman">January   23, 2007</font></p>  </td>
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    <hr align="center" width="100%" size="1" noshade color=black>
  
    </td>
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    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
   </tr>
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    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">Dr.   Barry Rosenbaum</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
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    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
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  </table>
  
  
  <div style="page-break-before:always"></div>
  <PAGE>
  <br>
  
  <p  align="center">
  <font size="2" face="Times New Roman"><b>NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION<br> REGISTRATION STATEMENT ON FORM S-8<br> EXHIBIT INDEX</b></font></p>
  <table align="center"  border="0" style="border-collapse:collapse" cellspacing="0"  cellpadding="0"  width="100%">
  
   <tr>
    <td width="16%" valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em"><font size="1" face="Times New Roman"><b>Exhibit No.</b></font></p>  </td>
    <td width="2%" valign="top">
    <p style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td width="40%" valign="top">
    <p  align="center">
  <font size="1" face="Times New Roman"><b>Description</b></font></p>  </td>
    <td width="2%" valign="top">
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  align="Left" width="40%" valign="top">
    <p  align="center">
  <font size="1" face="Times New Roman"><b>Method of Filing</b></font></p>  </td>
   </tr>
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    </td>
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    <p style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
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    <hr size="1" width="100%" noshade color=black>
  
    </td>
    <td  valign="top">
    <p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p> </td>
    <td  align="Left"  valign="top">
    <hr size="1" width="100%" noshade color=black>
  
    </td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">4.1</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">Form of the Company&#146;s   Common Stock Certificate</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  align="Left"  valign="top">
    <p  align="center">
  <font size="2" face="Times New Roman">Incorporated   by reference to Exhibit 4.1 to the Company&#146;s Registration Statement on Form   10 (File No 0-19331)</font></p>  </td>
   </tr>
   <tr>
     <td valign="top"><p align="center" style="margin-left:1em; text-indent:-1em"><font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td  align="Left" valign="top"><p  align="center"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">4.2</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">Restated Certificate of   Incorporation of Northern Technologies International Corporation</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  align="Left"  valign="top">
    <p  align="center">
  <font size="2" face="Times New Roman">Incorporated   by reference to Exhibit 3.1 to the Company&#146;s Annual Report on Form 10-KSB for   the fiscal year ended August 31, 2006 (File No 001-11038)</font></p>  </td>
   </tr>
   <tr>
     <td valign="top"><p align="center" style="margin-left:1em; text-indent:-1em"><font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td  align="Left" valign="top"><p  align="center"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em"><font size="2" face="Times New Roman">4.3</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">Amended and Restated   Bylaws of Northern Technologies International Corporation</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  align="Left"  valign="top">
    <p  align="center">
  <font size="2" face="Times New Roman">Incorporated   by reference to Exhibit 3.1 to the Company&#146;s Quarterly Report on Form 10-QSB   for the fiscal quarter ended November 30, 2006 (File No. 001-11038)</font></p>  </td>
   </tr>
   <tr>
     <td valign="top"><p align="center" style="margin-left:1em; text-indent:-1em"><font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td  align="Left" valign="top"><p  align="center"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">5.1</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">Opinion of Oppenheimer   Wolff &amp; Donnelly LLP</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  align="Left"  valign="top">
    <p  align="center">
  <font size="2" face="Times New Roman">Filed   herewith</font></p>  </td>
   </tr>
   <tr>
     <td valign="top"><p align="center" style="margin-left:1em; text-indent:-1em"><font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td  align="Left" valign="top"><p  align="center"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">23.1</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">Consent of Independent   Registered Public Accounting Firm</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  align="Left"  valign="top">
    <p  align="center">
  <font size="2" face="Times New Roman">Filed   herewith</font></p>  </td>
   </tr>
   <tr>
     <td valign="top"><p align="center" style="margin-left:1em; text-indent:-1em"><font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td  align="Left" valign="top"><p  align="center"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em">
  <font size="2" face="Times New Roman">23.2</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em">
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="2" face="Times New Roman">Consent of Oppenheimer   Wolff &amp; Donnelly LLP</font></p>  </td>
    <td  valign="top">
    <p>
  <font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  align="Left"  valign="top">
    <p  align="center">
  <font size="2" face="Times New Roman">Included   as part of Exhibit 5.1</font></p>  </td>
   </tr>
   <tr>
     <td valign="top"><p align="center" style="margin-left:1em; text-indent:-1em"><font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p style="margin-left:1em; text-indent:-1em"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
     <td valign="top"><p  align="center"><font size=1 face="Times New Roman">&nbsp;</font></p></td>
     <td  align="Left" valign="top"><p  align="center"> <font size="1" face="Times New Roman">&nbsp;</font></p></td>
   </tr>
   <tr>
    <td  valign="top">
    <p align="center" style="margin-left:1em; text-indent:-1em"><font size="2" face="Times New Roman">24.1</font></p>  </td>
    <td  valign="top">
    <p style="margin-left:1em; text-indent:-1em"><font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  valign="top">
    <p><font size="2" face="Times New Roman">Power of Attorney</font></p>  </td>
    <td  valign="top">
    <p><font size="1" face="Times New Roman">&nbsp;</font></p>  </td>
    <td  align="Left"  valign="top">
    <p  align="center"><font size="2" face="Times New Roman">Included   on the signature page to this Registration Statement</font></p>  </td>
   </tr>
  </table>
  
  
  
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metadata_documents: [{"type": "S-8", "sequence": "1", "filename": "nt139420.htm", "description": "FORM S-8", "secsgml_size_bytes": 81697}]
metadata_filer: {"company-data": {"conformed-name": "NORTHERN TECHNOLOGIES INTERNATIONAL CORP", "cik": "0000875582", "assigned-sic": "2670", "irs-number": "410857886", "state-of-incorporation": "DE", "fiscal-year-end": "0831"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-140244", "film-number": "07557006"}, "business-address": {"street1": "4201 WOODLAND ROAD", "street2": "PO BOX 69", "city": "CIRCLE PINES", "state": "MN", "zip": "55014", "phone": "(763) 225-6601"}, "mail-address": {"street1": "4201 WOODLAND ROAD", "street2": "PO BOX 69", "city": "CIRCLE PINES", "state": "MN", "zip": "55014"}, "former-company": {"former-conformed-name": "NORTHERN INSTRUMENTS CORP", "date-changed": "19930328"}}
text: As filed with the Securities and Exchange Commission on January 23, 2007
  Registration No. 333-_______
  UNITED STATES
  SECURITIES AND EXCHANGE COMMISSION
  Washington, D.C. 20549
  FORM S-8
  REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
  NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION
  (Exact   Name of Registrant as Specified in Its Charter)
  Delaware
  41-0857886
  (State or   Other Jurisdiction of
  Incorporation or Organization)
  (I.R.S.   Employer
  Identification Number)
  4201 Woodland Road
  Circle Pines, MN  55014
  (763)-225-6637
  (Address   of Registrant's Principal Executive Office) (Zip Code)
  Northern   Technologies International Corporation
  Employee Stock Purchase Plan
  (Full   title of the plan)
  Matthew C. Wolsfeld
  Chief Financial Officer and Corporate   Secretary
  Northern Technologies International   Corporation
  4201 Woodland Road
  Circle Pines, MN  55014
  (763)-225-6637
  (Name and   Address, Including Zip Code, and Telephone Number, Including Area Code, of   Agent For Service)
  Copies requested to:
  Amy E. Culbert, Esq.
  Oppenheimer Wolff & Donnelly LLP
  45 South Seventh Street, Suite 3300
  Minneapolis, Minnesota 55402-1509
  (612) 607-7287
  CALCULATION OF REGISTRATION FEE
  Title of   Each Class of Securities to
  be Registered
  Amount to   be
  Registered(1)
  Proposed   Maximum
  Offering Price Per Share(2)
  Proposed   Maximum
  Aggregate Offering Price(2)
  Amount of
  Registration Fee
  Common Stock, par value   $0.02 per share
  100,000   shares
  $6.71
  $671,000
  $71.80
  (1)
  The number of shares of   common stock, par value $0.02 per share ("Common Stock"), stated above   consists of the aggregate number of shares which may be issued under the   Northern Technologies International Corporation Employee Stock Purchase Plan   (the "Plan").  The maximum number of   shares of Common Stock that may be issued under the Plan is subject to   adjustment in accordance with certain provisions of the Plan.  Accordingly, pursuant to Rule 416 under   the Securities Act of 1933, as amended (the "Securities Act"), to the extent   additional shares of Common Stock may be issued or issuable as a result of a   stock split or other distribution declared at any time by the Board of   Directors while this Registration Statement is in effect, this Registration   Statement is hereby deemed to cover all such additional shares of Common   Stock.
  (2)
  Estimated solely for the   purpose of determining the registration fee pursuant to Rule 457(c) and   457(h) under the Securities Act.  The   Plan establishes a purchase price equal to 90% of the fair market value of   the Common Stock; and therefore, the price of the shares to be issued under   the Plan is based on 90% of the average of the high and low sale prices of   the Common Stock, as reported on the American Stock Exchange  on January 23, 2007.
  PART I
  INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
  The documents containing the information specified in Part I of Form S-8 will be sent or given to participants in the Employee Stock Purchase Plan of Northern Technologies International Corporation, a Delaware corporation (the "Company" or the "Registrant"), as specified by Rule 428(b)(1) of the Securities Act of 1933, as amended (the "Securities Act").  In accordance with the instructions of Part I of Form S-8, such documents will not be filed with the Securities and Exchange Commission (the "Commission") either as part of this Registration Statement or as prospectuses or prospectus supplements pursuant to Rule 424 of the Securities Act.  These documents and the documents incorporated by reference pursuant to Item 3 of Part II of this Registration Statement, taken together, constitute a prospectus as required by Section
  10(a) of the Securities Act.
  PART II
  INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
  Item 3.  Incorporation of Documents by Reference
  The following documents previously filed by the Company with the Commission are incorporated by reference into this Registration Statement:
  (a)
  Annual Report on Form   10-KSB for the year ended August 31, 2006;
  (b)
  Quarterly Report on Form   10-QSB for the quarter ended November 30, 2006;
  (c)
  All other reports filed by   the Company pursuant to Sections 13(a) or 15(d) of the Securities Exchange   Act of 1934, as amended (the "Exchange Act"), since August 31, 2006; and
  (d)
  The description of the   Company's Common Stock contained in its Registration Statement on Form 10   (File No 0-19331), including any amendments or reports filed for the purpose   of updating such description.
  In addition, all documents filed with the Commission by the Company (other than portions of such documents which are furnished and not filed) pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act subsequent to the date of this Registration Statement and prior to the filing of a post-effective amendment which indicates that all securities offered hereby have been sold or which deregisters all such securities then remaining unsold, shall be deemed to be incorporated by reference in this Registration Statement and to be a part hereof from the time of filing of such documents.
  Any statement contained in the documents incorporated or deemed to be incorporated by reference in this Registration Statement shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained herein or in any other subsequently filed document which also is incorporated or deemed to be incorporated by reference in this Registration Statement modifies or supersedes such statement.  Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement.
  Item 4.  Description of Securities
  Not applicable.  The Company's Common Stock to be offered pursuant to this Registration Statement has been registered under Section 12 of the Exchange Act as described in Item 3 of this Part II.
  Item 5.  Interests of Named Experts and Counsel
  Not applicable.
  Item 6.  Indemnification of Directors and Officers
  Under the Delaware General Corporation Law ("DGCL"), a corporation may indemnify any person who was or is a party or is threatened to be made a party to an action (other than an action by or in the right of the corporation) by reason of the fact that such person is or was a director, officer, employee or agent of the corporation, or is or was serving at the corporation's request, as a director, officer, employee or agent of another corporation or other enterprise, against expenses (including attorneys' fees) that are actually and reasonably incurred by such person, and judgments, fines and amounts paid in settlement of such action, provided that such person acted in good faith and in a manner the person reasonably believed to be in or not opposed to the corporation's best interests and, with respect to any criminal action or proceeding, had no reasonable cause to believe that the
  person's conduct was unlawful.
  Although the DGCL permits a corporation to indemnify any person referred to above against expenses in connection with the defense or settlement of an action by or in the right of the corporation, provided that such person acted in good faith and in a manner the person reasonably believed to be in or not opposed to the corporation's best interests, if such person has been judged liable to the corporation, indemnification is only permitted to the extent that the Court of Chancery (or the court in which the action was brought) determines that, despite the adjudication of liability, such person is entitled to indemnity for such expenses as the court deems proper.  The determination as to whether a person seeking indemnification has met the required standard of conduct is to be made, with respect to a person who is a director or officer at the time of such determination, (1) by a majority vote of the
  
  directors who are not parties to such action, suit or proceeding, even though less than a quorum, or (2) by a committee of such directors designated by majority vote of such directors, even though less than a quorum, or (3) if there are no such directors or if such directors so direct, by independent legal counsel in a written opinion, or (4) by the stockholders.  The DGCL also provides for mandatory indemnification of any present or former director or officer against expenses to the extent such person has been successful in any proceeding covered by the statute.
  In addition, the DGCL provides that, to the extent a present or former director or officer of a corporation has been successful in the defense of any action, suit or proceeding or in the defense of any claim, issue or matter therein, such person shall be indemnified against expenses actually and reasonably incurred in connection therewith; that indemnification provided for by the DGCL shall not be deemed exclusive of any other rights to which the indemnified party may be entitled; and that the scope of indemnification extends to directors, officers, employees or agents of a constituent corporation absorbed in a consolidation or merger and persons serving in that capacity at the request of the constituent corporation for another.
  The DGCL also allows a corporation to purchase and maintain insurance on behalf of a director or officer of the corporation against any liability asserted against or incurred by such person in any such capacity or arising out of such person's status as such, whether or not the corporation would have the power to indemnify such person against such liabilities under the DGCL.
  Article VII
  of the Company's Certificate of Incorporation, as amended, provides that
  each director and officer, past or present, of the Company, and their respective
  heirs, administrators and executors, shall be indemnified by the Company in accordance with, and to the fullest extent provided by, the provisions of the Delaware General Corporation Law as they may from time to time be amended.
  Additionally, Article VII of the Company's Amended and Restated Bylaws provides that the Company shall indemnify any director, officer or employee against any and all judgments, penalties, fines, amounts paid in settlement and expense incurred or imposed in connection with, or which result from, any proceeding in which such person is or may become involved by reason of being a director, officer or employee.  A proceeding means any actual, threatened or completed action, suit, arbitration, alternative dispute resolution mechanism, investigation, administrative hearing or other formal claim that could result or has resulted in personal liability, whether civil, criminal, administrative or investigative.  In connection with a proceeding, the Company may advance expenses to the director, officer or employee upon receipt of an undertaking by or on behalf of such person to repay such advance if
  it shall ultimately be determined that such person is not entitled to indemnification by the Company.  Article VIII gives the Company the express authority to enter into such agreements as the board of directors deems appropriate for the indemnification of present of future directors and officers of the Company.
  The Company maintains directors' and officers' liability insurance, including a reimbursement policy in favor of the Company.
  The foregoing represents a summary of the general effect of the Delaware General Corporation Law, the Company's Certificate of Incorporation, as amended, the Company's Amended and Restated Bylaws, and any other Company contracts or arrangements relating to indemnification, and is qualified in its entirety by reference to, the terms and provisions of the Delaware General Corporation Law, the Company's Certificate of Incorporation, as amended, the Company's Amended and Restated Bylaws, and such other Company contracts or arrangements relating to indemnification.
  Item 7.  Exemption from Registration Claimed.
  Not applicable.
  Item 8.  Exhibits
  The following exhibits are filed with or incorporated by reference into this Registration Statement:
  Exhibit   No.
  Description
  4.1
  Form of the Company's   Common Stock Certificate (incorporated by reference to Exhibit 4.1 to the   Company's Registration Statement on Form 10 (File No 0-19331))
  4.2
  Restated Certificate of   Incorporation of Northern Technologies International Corporation   (incorporated by reference to Exhibit 3.1 to the Company's Form 10-KSB for   the fiscal year ended August 31, 2006 (File No 001-11038))
  4.3
  Amended and Restated   Bylaws of Northern Technologies International Corporation (incorporated by   reference to Exhibit 3.1 to the Company's Quarterly Report on Form 10-KSB for   the fiscal quarter ended November 30, 2006 (File No. 001-11038))
  5.1
  Opinion of Oppenheimer   Wolff & Donnelly LLP (Filed herewith)
  23.1
  Consent of Independent   Registered Public Accounting Firm (Filed herewith)
  23.2
  Consent of Oppenheimer   Wolff & Donnelly LLP (included as part of Exhibit 5.1)
  24.1
  Power of Attorney   (included on the signature page to this Registration Statement)
  Item 9.  Undertakings
  (a)
  The undersigned Company   hereby undertakes as follows to:
  (1)
  file, during any period in   which it offers or sells securities, a post-effective amendment to this   registration statement to:
  (i)          include   any prospectus required by section 10(a)(3) of the Securities Act;
  (ii)          reflect   in the prospectus any facts or events which, individually or together,   represent a fundamental change in the information in the registration   statement. Notwithstanding the foregoing, any increase or decrease in volume   of securities offered (if the total dollar value of securities offered would   not exceed that which was registered) any deviation from the low or high end   of the estimated maximum offering range may be reflected in the form of   prospectus filed with the Commission pursuant to Rule 424(b) if, in the   aggregate, the changes in volume and price represent no more than a 20   percent change in the maximum aggregate offering price set forth in the   "Calculation of Registration Fee" table in the effective registration   statement; and
  (iii)          include   any additional or changed material information on the plan of distribution.
  provided
  ,
  however
  , that paragraphs (a)(1)(i)   and (a)(1)(ii) do not apply if the information required to be included in a   post-effective amendment by those paragraphs is included in the periodic   reports filed by the Company under the Exchange Act that are incorporated by   reference into this Registration Statement.
  (2)
  for determining liability   under the Securities Act, each post-effective amendment will be treated as a   new registration statement of the securities offered, and the offering of the   securities at that time to be the initial
  bona   fide
  offering thereof.
  (3)
  file a post-effective   amendment to remove from registration any of the securities that remain   unsold at the end of the offering.
  (b)          Insofar   as indemnification for liabilities arising under the Securities Act may be   permitted to directors, officers and controlling persons of the Company   pursuant to the foregoing provisions, or otherwise, the Company has been   advised that in the opinion of the Securities and Exchange Commission such   indemnification is against public policy as expressed in the Act and is,   therefore, unenforceable.  In the   event that a claim for indemnification against such liabilities (other than   the payment by the Company of expenses incurred or paid by a director,   officer or controlling person of the Company in the successful defense of any   action, suit or proceeding) is asserted by such director, officer or   controlling person in connection with the securities being registered, the   Company will, unless in the opinion of its
  counsel the matter has been   settled by controlling precedent, submit to a court of appropriate   jurisdiction the question whether such indemnification by it is against public   policy as expressed in the Securities Act and will be governed by the final   adjudication of such issue.
  SIGNATURES
  Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Circle Pines, State of Minnesota, on January 23, 2007.
  NORTHER   TECHNOLOGIES INTERNATIONAL CORPORATION
  By:
  /s/ G. Patrick Lynch
  G. Patrick Lynch
  President and Chief   Executive Officer
  (principal executive   officer)
  By:
  /s/ Matthew C. Wolsfeld,   CPA
  Matthew C. Wolsfeld, CPA
  Chief Financial Officer   and Corporate Secretary
  (principal financial and   accounting officer)
  POWER OF ATTORNEY
  Each person whose signature appears below hereby authorizes and appoints G. Patrick Lynch and Matthew C. Wolsfeld, CPA, or either of them, his or her true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any and all amendments (including post-effective amendments) to this Registration Statement, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and
  agents or any of them, their, or his or her, substitute or substitutes, may lawfully do or cause to be done by virtue hereof.
  Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.
  Signature
  Title
  Date
  /s/   G. Patrick Lynch
  President   and Chief Executive Officer
  January   23, 2007
  G.   Patrick Lynch
  /s/   Matthew C. Wolsfeld, CPA
  Chief   Financial Officer and Corporate Secretary
  January   23, 2007
  Matthew   C. Wolsfeld, CPA
  /s/   Pierre Chenu
  Chairman   of the Board
  January   23, 2007
  Pierre   Chenu
  /s/   Donald A. Kubik, Ph.D.
  Chief   Technology Officer and Vice Chairman of the Board
  January   23, 2007
  Donald   A. Kubik, Ph.D.
  /s/   Dr. Sunggyu Lee
  Director
  January   23, 2007
  Dr.   Sunggyu Lee
  /s/   Mark Mayers
  Director
  January   23, 2007
  Mark   Mayers
  /s/   Dr. Ramani Narayan
  Director
  January   23, 2007
  Dr.   Ramani Narayan
  /s/   Mark J. Stone
  Director
  January   23, 2007
  Mark   J. Stone
  /s/   Dr. Barry Rosenbaum
  Director
  January   23, 2007
  Dr.   Barry Rosenbaum
  NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION
  REGISTRATION STATEMENT ON FORM S-8
  EXHIBIT INDEX
  Exhibit No.
  Description
  Method of Filing
  4.1
  Form of the Company's   Common Stock Certificate
  Incorporated   by reference to Exhibit 4.1 to the Company's Registration Statement on Form   10 (File No 0-19331)
  4.2
  Restated Certificate of   Incorporation of Northern Technologies International Corporation
  Incorporated   by reference to Exhibit 3.1 to the Company's Annual Report on Form 10-KSB for   the fiscal year ended August 31, 2006 (File No 001-11038)
  4.3
  Amended and Restated   Bylaws of Northern Technologies International Corporation
  Incorporated   by reference to Exhibit 3.1 to the Company's Quarterly Report on Form 10-QSB   for the fiscal quarter ended November 30, 2006 (File No. 001-11038)
  5.1
  Opinion of Oppenheimer   Wolff & Donnelly LLP
  Filed   herewith
  23.1
  Consent of Independent   Registered Public Accounting Firm
  Filed   herewith
  23.2
  Consent of Oppenheimer   Wolff & Donnelly LLP
  Included   as part of Exhibit 5.1
  24.1
  Power of Attorney
  Included   on the signature page to this Registration Statement