1950-51 Eastern Canada Allan Cup Playoffs

Quarter Final
Best of 5

Dolbeau Castors beat St Francis Xavier University XMen 3 games to 1.

Semi Finals
Best of 5

Owen Sound Mercurys beat Sault Ste Marie Greyhounds 3 games to 2.

Dolbeau Castors beat Smiths Falls Rideaus 3 games to 2.

Final
Best of 5

Owen Sound Mercurys beat Dolbeau Castors 3 games to 1.

Owen Sound Mercurys advanced to the 1950-51 Allan Cup Final.