The 1972 Memorial Cup occurred May 8–14 at the Ottawa Civic Centre in Ottawa, Ontario. It was the 54th annual Memorial Cup competition, organized by the Canadian Amateur Hockey Association (CAHA) to determine the champion of major junior A ice hockey. Participating teams were the winners of the Ontario Hockey Association, Quebec Major Junior Hockey League and Western Hockey League which were the Peterborough Petes, Cornwall Royals and Edmonton Oil Kings. Cornwall won their 1st Memorial Cup, defeating Peterborough in the final game. 1972 was the first year the Memorial Cup was contested as a round robin tournament between three teams.