EXHIBIT 13.1



  CERTIFICATION OF CHIEF EXECUTIVE OFFICER
  PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

            Pursuant to 18 U.S.C. 1350, as created by Section 906 of the
Sarbanes-Oxley Act of 2002, the undersigned officer of Northwestern Mineral
Ventures Inc. (the "Company") hereby certifies, to such officer's knowledge,
that:

         (i) the accompanying Annual Report on Form 20-F of the Company for the
         fiscal year ended December 31, 2005 (the "Report") fully complies with
         the requirements of Section 13(a) or Section 15(d), as applicable, of
         the Securities Exchange Act of 1934, as amended; and

         (ii) the information contained in the Report fairly presents, in all
         material respects, the financial condition and results of operations of
         the Company.


Date: June 29, 2006
                              /s/ Marek Kreczmer
                             --------------------------
                             Marek Kreczmer
                             President and Chief Executive
                             Officer

The foregoing certifications are being furnished solely to accompany the Report
pursuant to 18 U.S.C. 1350, and are not being filed for purposes of Section 18
of the Securities Exchange Act of 1934, as amended, and are not to be
incorporated by reference into any filing of the Company, whether made before or
after the date hereof, regardless of any general incorporation language in such
filing.