1954-55 Northern Ontario Senior Playoffs

Semi finals
Best of 7

Iroquois Falls Abitibi Eskimos beat Kirkland Lake 4 games to none (10-5, W-L, W-L, 4-0)

Timmins-Schumacher Flyers beat South Porcupine Porkies 4 games to 2 (5-1, W-L, 1-4, 4-1, L-W, 11-2).

Final
Best of 7


 * Timmins-Schumacher 5 Iroquois Falls 4
 * Iroquois Falls 7 Timmins-Schumacher 1
 * Timmins-Schumacher 4 Iroquois Falls 3
 * Iroquois Falls 3 Timmins-Schumacher 2
 * Iroquois Falls 4 Timmins-Schumacher 3
 * Iroquois Falls 3 Timmins-Schumacher 2

Iroquois Falls Abitibi Eskimos beat Timmins-Schumacher Flyers 4 games to 2.

Standings
Note: Greyhounds played in Canada and the Indians played in the United States.

Semi finals
Best of 7


 * Indians 2 Greyhounds 1
 * Greyhounds 3 Indians 2
 * Greyhounds 4 Indians 3
 * Indians 3 Greyhounds 1
 * Greyhounds 4 Indians 1
 * Greyhounds 2 Indians 2
 * Indians 4 Greyhounds 3

(tied 3 games each 1 tie)

''Note: If the Indians won the last game (as they did), by mutual consent a sudden death overtime period was played after the game. The Greyhounds scored first and won the series.''

Sault Ste Marie Greyhounds beat Sault Ste Marie Indians


 * North Bay 3 Pembroke 2
 * North Bay 6 Pembroke 0
 * Pembroke 4 North Bay 2
 * North Bay 3 Pembroke 1
 * Pembroke 5 North Bay 3
 * North Bay 5 Pembroke 3

North Bay Trappers beat Pembroke Lumber Kings 4 games to 2.

Final
Best of 7


 * North Bay 4 Sault Ste Marie 2
 * Sault Ste Marie 5 North Bay 4
 * Sault Ste Marie 7 North Bay 0
 * North Bay 3 Sault Ste Marie 1
 * Sault Ste Marie 6 North Bay 0
 * North Bay 7 Sault Ste Marie 2
 * Sault Ste Marie 2 North Bay 1

Sault Ste Marie Greyhounds beat North Bay Trappers 4 games to 3.

Regional final
Best of 7


 * Sault Ste Marie 7 Iroquois Falls 1
 * Sault Ste Marie 3 Iroquois Falls 1
 * Sault Ste Marie 4 Iroquois Falls 3
 * Sault Ste Marie 8 Iroquois Falls 0

Sault Ste Marie Greyhounds beat Iroquois Falls Abitibi Eskimos 4 games to none

Sault Ste Marie Greyhounds advanced to the 1954-55 Eastern Canada Allan Cup Playoffs.