1920-21 Thunder Bay Senior Playoffs

Teams

 * Port Arthur North Ends
 * Fort William Maple Leafs
 * Fort William Beavers
 * Kenora Thistles

Statistics unavailable

Final
2 games total goals

Port Arthur North Ends beat Fort William Maple Leafs 11 goals to 7.

Port Arthur North Ends advanced to the 1920-21 Western Canada Allan Cup Playoffs.