1939-40 Thunder Bay Senior Playoffs

Final
Best of 5


 * Port Arthur 6 Geraldton 0
 * Port Arthur 4 Geraldton 1
 * Port Arthur 4 Gerladton 3

Port Arthur Bearcats beat Geraldton Miners 3 wins to none.

Independent teams

 * Red Lake Thunderers
 * Sioux Lookout Patricia Flyers
 * Fort Frances Maple Leafs

Quarter final
2 games total goals


 * Red Lake 5 Sioux Lookout 3
 * Red Lake 6 Sioux Lookout 2

Red Lake Thunderers beat Sioux Lookout Patricia Flyers 11 goals to 5.

Semi final
Best of 3


 * Fort Frances 4 Red Lake 2
 * Fort Frances 6 Red Lake 1

Fort Frances Maple Leafs beat Red Lake Thunderers 2 wins to none.

Final
Best of 3


 * Port Arthur 5 Fort Frances 1
 * Port Arthur 7 Fort Frances 4

Port Arthur Bearcats beat Fort Frances Maple Leafs 2 wins to none.

Port Arthur Bearcats advanced to the 1939-40 Western Canada Allan Cup Playoffs.