1946-47 Thunder Bay Senior Playoffs

Independent teams

 * Port Arthur Bearcats (played in International Amateur League)
 * Fort William Legion (played in International Amateur League)
 * Fort Frances Canadians (played in Northern Amateur League)

Semi Final
Best of 7


 * Port Arthur 8 Fort William 4
 * Port Arthur 6 Fort William 3
 * Fort William 7 Port Arthur 4
 * Port Arthur 5 Fort William 3
 * Port Arthur 5 Fort William 3

Port Arthur Bearcats beat Fort William Legion 4 wins to 1.

Final
Best of 5


 * Port Arthur 7 Fort Frances 4
 * Port Arthur 4 Fort Frances 3
 * Fort Frances 7 Port Arthur 2
 * Port Arthur 5 Fort Frances 3

Port Arthur Bearcats beat Fort Frances Canadians 3 wins to 1.

Port Arthur Bearcats advanced to the 1946-47 Western Canada Allan Cup Playoffs.