1930-31 Northern Ontario Senior Playoffs

First Half

 * 1/2: Iroquois Falls - Timmins 3:1
 * 1/6: South Porcupine - Timmins 3:1
 * South Porcupine - Iroquois Falls 2:1
 * 1/12: South Porcupine - Timmins 4:3 OT
 * 1/15: Iroquois Falls - Timmins 3:2 OT
 * 1/20: Iroquois Falls - South Porcupine 4:0
 * 1/23: South Porcupine - Iroquois Falls 4:3 OT - tiebreaker

Second Half

 * 1/26: Iroquois Falls - Timmins 4:0
 * 1/29: South Porcupine - Timmins 4:0
 * 2/2: Iroquois Falls - South Porcupine 8:3
 * 2/5: South Porcupine - Timmins 4:2
 * 2/9: Iroquois Falls - Timmins 3:1
 * 2/12: Iroquois Falls - South Porcupine 9:4

Final
2 games total goals


 * February 14 Iroquois Falls 3 South Porcupine 1
 * February 17 South Porcupine 5 Iroquois Falls 4

Iroquois Falls won series, 7 goals to 6.

Scores

 * 1/7: Cobalt - New Liskeard 3:1
 * 1/12: New Liskeard - Cobalt 6:2
 * 1/19: New Liskeard - Cobalt 3:2
 * 1/26: Cobalt - New Liskeard 3:2
 * 2/2: 'New Liskeard - Cobalt 3:2 OT
 * 2/5: New Liskeard - Cobalt 2:1
 * 2/9: Cobalt - New Liskeard 8:5
 * 2/13: Cobalt - New Liskeard 3:2

Final
Sudden death


 * 2/16: New Liskeard 5 Cobalt 1

Independent teams

 * Kapuskasing Polar Bears
 * Kirkland Lake
 * Sault Ste Marie
 * Sudbury Wolves (all star team from the Nickel Belt League)

Quarter Finals
2 games total goals

Iroquois Falls Eskimos beat Kapuskasing Polar Bears 7 goals to 5.

Kirkland Lake beat New Liskeard 11 goals to 3.

Semi Finals
2 games total goals

Iroquois Falls Eskimos beat Kirkland Lake 11 goals to 3.

Sudbury Wolves won Sault Ste Marie defaulted.

Final
2 games total goals

Sudbury Wolves beat Iroquois Falls Eskimos 6 goals to 3.

Sudbury Wolves advanced to the 1930-31 Eastern Canada Allan Cup Playoffs.