These determined the Western Canadian representative in the 1991 Allan Cup Final.
Champions[]
- Alberta: Paul Band Black Hawks
- British Columbia: Abbotsford Flyers
- Manitoba: Thunder Bay Twins
- Saskatchewan: Kindersley Sr. Klippers
Semi-Finals[]
Best of 5
- Thunder Bay 4 Kindersley 2
- Thunder Bay 6 Kindersley 3
- Thunder Bay 7 Kindersley 3
Thunder Bay Twins beat Kindersley Sr. Klippers 3 wins to none.
- First three games unknown
- Abbotsford 5 Paul Bland 4
- Paul Bland 4 Abbotsford 1
Paul Band Black Hawks beat Abbotsford Flyers 3 wins to 2.
Final (Patton Cup)[]
Best of 7
- Thunder Bay Paul Band
- Thunder Bay 7 Paul Band 1
- Thunder Bay 5 Paul Band 1
- Thunder Bay 9 Paul Band 3
Thunder Bay Twins beat Paul Band Black Hawks 4 wins to none.
Thunder Bay Twins advanced to the 1991 Allan Cup Final.