1937-38 Thunder Bay Senior Playoffs

Standings
''Fort William Wanderers and Port Arthur Bearcats also played in the International Amateur League. The games that they played against each other counted in both leagues.''

Final
Best of 5


 * Fort William 2 Port Arthur 0
 * Port Arthur 5 Fort William 3
 * Fort William 4 Port Arthur 2
 * Port Arthur 7 Fort William 5
 * Port Arthur 4 Fort William 3

Port Arthur beat Fort William 3 wins to 2.

Final
Best of 3

Little Long Lac beat McLeod-Cockshutt 2 wins to 1.

Regional Final
Best of 3

Port Arthur Bearcats beat Little Long Lac 2 wins to 1.

Port Arthur Bearcats advanced to the 1937-38 Western Canada Allan Cup Playoffs.