These playoffs determined the Eastern Canadian representative in the 1985 Allan Cup final.
Champions[]
- Ontario: Dundas-Hamilton Tigers
- Newfoundland and Labrador: Corner Brook Royals
- New Brunswick: Riverview Trappers
Semi-Final[]
Best of 5
- Corner Brook 4 Riverview 2
- Corner Brook 7 Riverview 4
- Corner Brook 12 Riverview 4
Corner Brook Royals beat Riverview Trappers 3 wins to 0.
Final[]
Best of 7
- Corner Brook 9 Dundas-Hamilton 8 (OT)
- Corner Brook 10 Dundas-Hamilton 2
- Corner Brook 6 Dundas-Hamilton 4
- Corner Brook 6 Dundas-Hamilton 5
Corner Brook Royals beat Dundas-Hamilton Tigers 4 wins to 0.
Corner Brook Royals advanced to the 1985 Allan Cup Final.