Champions
- British Columbia: New Westminster Royals
- Alberta: Edmonton Movers
- Saskatchewan: Saskatoon Macs
- Manitoba: Flin Flon Bombers
- Thunder Bay: Port Arthur Marrs
Note: The Western Hockey League was not eligible for the Memorial Cup.
Playoffs
Quarter final
Best of 7
- Edmonton 6 New Westminster 3
- New Westminster 3 Edmonton 1
- New Westminster 3 Edmonton 0
- New Westminster 8 Edmonton 5
- Edmonton 11 New Westminster 2
- Edmonton 5 New Westminster 0
- New Westminster 6 Edmonton 5
New Westminster Royals beat Edmonton Movers 4 wins to 3.
Semi finals
Best of 7
- New Westminster 9 Saskatoon 6
- New Westminster 8 Saskatoon 2
- Saskatoon 5 New Westminster 2
- New Westminster 8 Saskatoon 0
- Saskatoon 6 New Westminster 5
- New Westminster 10 Saskatoon 0
New Westminster Royals beat Saskatoon Macs 4 wins to 2.
- Port Arthur 6 Flin Flon 2
- Port Arthur 5 Flin Flon 1
- Flin Flon 4 Port Arthur 3
- Port Arthur 3 Flin Flon 1
- Flin Flon 6 Port Arthur 2
- Port Arthur 6 Flin Flon 1
Port Arthur Marrs beat Flin Flon Bombers 4 wins to 3.
Final
Best of 7
- New Westminster 6 Port Arthur 5
- Port Arthur 5 New Westminster 2
- Port Arthur 10 New Westminster 1
- Port Arthur 6 New Westminster 2
- Port Arthur 5 New Westminster 0
Port Arthur Marrs beat New Westminster Royals 4 wins to 1.
Port Arthur Marrs advanced to the 1966-67 Memorial Cup Final.