EXHIBIT12.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I,Marek Kreczmer, certify that:

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| 1.  | I have reviewedthis annual report on Form 20-F of Northwestern Mineral VenturesInc.; |

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| 2.  | Based on my knowledge, this annual reportdoes not contain any untrue statement of a material fact or omit tostate a material fact necessary to make the statements made, in lightof the circumstances under which such statements were made, notmisleading with respect to the period covered by this annualreport; |

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| 3.  | Based on my knowledge, the financialstatements, and other financial information included in this annualreport, fairly present in all material respects the financialcondition, results of operations and cash flows of the registrant asof, and for, the periods presented in this annualreport; |

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| 4.  | The registrant's other certifyingofficers and I are responsible for establishing and maintainingdisclosure controls and procedures (as defined in Exchange Act Rules13a-15(e) and 15d-15(e)) for the registrant andhave: |

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|  | a.  | Designed such disclosure controls andprocedures, or caused such disclosure controls and procedures to bedesigned under our supervision, to ensure that material informationrelating to the registrant, including its consolidated subsidiaries, ismade known to us by others within those entities, particularly duringthe period in which this report is beingprepared; |

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|  | b.  | Evaluated the effectiveness of theCompany’s disclosure controls and procedures and presented inthis report our conclusions about the effectiveness of the disclosurecontrols and procedures, as of the end of the period covered by thisreport based on such evaluation; |

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|  | c.  | Disclosed inthis report any change in the registrant's internal control overfinancial reporting that occurred during the period covered by theannual report that has materially affected, or is reasonably likely tomaterially affect the registrant's internal control overfinancial reporting; |

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| 5.  | The Company’s othercertifying officer and I have disclosed, based upon our most recentevaluation of internal controls over financial reporting, to theCompany’s auditors and the audit committee of theCompany’s board of directors: |

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|  | (a)  | Allsignificant deficiencies and material weaknesses in the design oroperation of internal control over financial reporting which arereasonably likely to adversely affect the Company’s ability torecord, process, summarize and report financial information;and |

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|  | (b)  | Any fraud, whether or not material, thatinvolves management or other employees who have a significant role inthe Company’s internal control over financial reporting. |

|  | /s/ Marek KreczmerMarekKreczmerPresident and Chief Executive Officer |
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Date:October  27, 2006

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