The 1980 Memorial Cup occurred May 4–11 at the Keystone Centre in Brandon, Manitoba and at the Agridome in Regina, Saskatchewan. It was the 62nd annual Memorial Cup competition and determined the major junior ice hockey champion of the Canadian Hockey League (CHL). 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.

The Regina Pats are a Canadian junior ice hockey team based in Regina, Saskatchewan. Founded in 1917, the Pats are the world's oldest continuously operating major junior hockey franchise in its original location and using its original name. The team was originally named the Regina Patricia Hockey Club, after Princess Patricia of Connaught, the granddaughter of Queen Victoria and daughter of the Governor General, the Duke of Connaught. The team name also associates Princess Patricia's Canadian Light Infantry–Pats sweaters bear the regimental badge and "PPCLI" flash as a shoulder patch.