League champions[]
- Metropolitan Montreal Junior League: Verdun Maple Leafs
- Provincial Junior League: Thetford Mines Canadiens
- Sagueney Junior League: Dolbeau Castors
Provincial Playoffs[]
Semi final[]
Best of 5
- Dolbeau 5 Verdun 2
- Verdun 5 Dolbeau 1
- Verdun 12 Dolbeau 3
- Dolbeau 6 Verdun 5
- Verdun 14 Dolbeau 0
Verdun Maple Leafs beat Dolbeau Castors 3 wins to 2.
Final[]
Best of 5
- Verdun 5 Thetford Mines 2
- Thetford Mines 5 Verdun 3
- Thetford Mines 6 Verdun 2
- Thetford Mines 4 Verdun 3
Thetford Mines Canadiens beat Verdun Maple Leafs 3 wins to 1.
Thetford Mines Canadiens advanced to the 1966-67 Eastern Canada Memorial Cup Playoffs.