1956-57 Eastern Canada Allan Cup Playoffs

Finalists

 * Northern Ontario: North Bay Trappers
 * Ontario: Whitby Dunlops

''Note: Quebec had a minor pro league which accounts for the lack of senior teams. The Maritimes stayed out of the Allan Cup playoffs beacause they felt that their teams were not strong enough to compete.''

Final
Best of 7

Whitby Dunlops beat North Bay Trappers 4 games to 3.

Whitby Dunlops advanced to the 1956-57 Allan Cup Final.