1958-59 Thunder Bay Senior Playoffs

Independent Teams

 * Port Arthur Bearcats
 * Fort William Beavers

Final
Best of 7


 * Port Arthur beat Fort William
 * Port Arthur 4 Fort William 1
 * Port Arthur 2 Fort William 1
 * Port Arthur 5 Fort William 3

Port Arthur Bearcats beat Fort William Beavers 4 wins to none.

Port Arthur Bearcats advanced to the 1958-59 Western Canada Allan Cup Playoffs.

See also List of Thunder Bay Senior Playoffs