1945-46 Ottawa District Senior Playoffs

Senior League Champions

 * Inter-Services League: Quartermaster General
 * Hull & District League: Hull Volants
 * Little Nation League: Thurso
 * Rideau Group: Perth Crescents
 * Upper Ottawa Valley League:Pembroke Lumber Kings
 * Lower Ottawa Valley League: Buckingham Abbotts
 * St Lawrence League: Cardinal
 * Highway League: Osgoode
 * Brockville Cabadian League: Brockville Royal Canadian Regiment
 * Long Sault League: Mille Roches
 * Central Ottawa Valley League: Cornwall
 * North Stomont League: Chesterville Maple Leafs
 * Nepean League: Westboro

First round
Best of 3


 * Chesterville beat Osgoode 2 games to none.
 * Cornwall beat Hull 2 games to 1.
 * Thurso beat Westboro
 * Cardinal beat Mille Roches 2 games to none.
 * Buckingham Abbotts beat Brockville Royal Canadian Regiment 2 games to none.

Second Round
Best of 3


 * Cornwall beat Chesterville

Quarter finals
Best of 3


 * Buckingham Abbotts beat Cardinal 2 games to none.
 * Cornwall beat Thurso 2 games to 1.
 * Pembroke Lumber Kings beat Perth Crescents 2 games to none, 1 tie

Semi finals
Best of 3


 * Cornwall 4 Buckingham 3
 * Cornwall 5 Buckingham 3

Cornwall beat Buckingham Abbotts 2 games to none.


 * Pembroke 11 Quartermaster General 8
 * Pembroke 4 Quartermaster General 1

Pembroke Lumber Kings beat Quartermaster General 2 games to none.

Final
Best of 3


 * Pembroke 13 Cornwall 1
 * Pembroke 11 Cornwall 5

Pembroke Lumber Kings beat Cornwall 2 games to none.

Pembroke Lumber Kings advanced to the 1945-46 Eastern Canada Allan Cup Playoffs