The 1980 Memorial Cup occurred May 4-May 11 at the Keystone Centre in Brandon, Manitoba and at the Regina Agridome in Regina, Saskatchewan. Participating teams were the winners of the Ontario Major Junior Hockey League, Quebec Major Junior Hockey League and Western Hockey League which were the Peterborough Petes, Cornwall Royals and Regina Pats. Cornwall won their second Memorial Cup, defeating Peterborough in the final game.