| Tournament details | |
|---|---|
| Venue(s) | Windsor Arena Windsor, Ontario |
| Dates | May 3–15, 1981 |
| Teams | 3 |
| Final positions | |
| Champions | Cornwall Royals (QMJHL) (3rd title) |
| Tournament statistics | |
| Games played | 7 |
The 1981 Memorial Cup occurred May 3–15 at the Windsor Arena in Windsor, Ontario. It was the 63rd 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 Hockey League, Quebec Major Junior Hockey League and Western Hockey League which were the Kitchener Rangers, Cornwall Royals and Victoria Cougars. Cornwall won their second Memorial Cup in a row and third overall, defeating Kitchener in the final game.