EXHIBIT 12.1


                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I, Marek Kreczmer, certify that:

1.  I have reviewed this annual report on Form 20-F of Northwestern Mineral
    Ventures Inc.;

2.  Based on my knowledge, this annual report does not contain any untrue
    statement of a material fact or omit to state a material fact necessary to
    make the statements made, in light of the circumstances under which such
    statements were made, not misleading with respect to the period covered by
    this annual report;

3.  Based on my knowledge, the financial statements, and other financial
    information included in this annual report, fairly present in all material
    respects the financial condition, results of operations and cash flows of
    the registrant as of, and for, the periods presented in this annual report;

4.  The registrant's other certifying officers and I are responsible for
    establishing and maintaining disclosure controls and procedures (as defined
    in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:

    a.  Designed such disclosure controls and procedures, or caused such
        disclosure controls and procedures to be designed under our supervision,
        to ensure that material information relating to the registrant,
        including its consolidated subsidiaries, is made known to us by others
        within those entities, particularly during the period in which this
        report is being prepared; and

    b.  Disclosed in this report any change in the registrant's internal control
        over financial reporting that occurred during the period covered by the
        annual report that has materially affected, or is reasonably likely to
        materially affect the registrant's internal control over financial
        reporting;




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