1957-58 Thunder Bay Intermediate Playoffs

Minnesota-Ontario League
The Warroad Lakers won the league title but were ineligible for these playoffs because they were an American team.

Semi Final
Best of 5

Fort Frances Canadians beat Dryden Rockets 3 wins to none.

Final
Best of 5


 * Kenora 6 Fort Frances 2
 * Kenora 5 Fort Frances 3
 * Fort Frances 3 Kenora 2
 * Fort Frances 3 Kenora 0
 * Kenora 6 Fort Frances 3

Kenora Thistles beat Fort Frances Canadians 3 wins to 2.

League champion
North Shore League: Red Rock

Regional Final
Best of 5

Kenora Thistles beat Red Rock 3 wins to 2.

Kenora Thistles advanced to the 1957-58 Western Canada Intermediate Playoffs.