The 1991 AFL Grand Final was an Australian rules football game contested between the Hawthorn Football Club and West Coast Eagles, held at Waverley Park in Melbourne on 28 September 1991. It was the 94th annual Grand Final of the Australian Football League (formerly the Victorian Football League), staged to determine the premiers for the 1991 AFL season. The match, attended 75,230 spectators, was won by Hawthorn by a margin of 53 points, marking that club's ninth premiership victory.