These were the 2005 Alberta Senior A/B playoffs:
Round-robin[]
3/25
- Spirit River Rangers - Beaumont Warriors 3:2
- Drayton Valley Wildcats - Bonnyville Pontiacs 3:2
- Slave Lake Winter Hawks - Cold Lake Packers 7:6
- Irma Aces - Millet Thunder 5:4
The winners advanced to the Senior A playoffs, while the losers continued in Senior B.
Senior A[]
- Semifinals
- 3/26: Slave Lake Winter Hawks - Irma Aces 7:3
- 3/26: Spirit River Rangers - Drayton Valley Wildcats 5:4
- Final
- 3/27: Slave Lake Winter Hawks - Spirit River Rangers 9:3
Senior B[]
- Semifinals
- 3/26: Millet Thunder - Cold Lake Packers 6:5
- 3/26: Bonnyville Pontiacs - Beaumont Warriors 6:2
- Final
- 3/27: Bonnyville Pontiacs - Millet Thunder 3:2