The 2001 State of Origin series was the 20th year that the annual three-game series between the Queensland and New South Wales representative rugby league football teams was contested entirely under 'state of origin' selection rules. The series was notable for marking the first time an England-based player was selected for State of Origin: Maroons legend Allan Langer was asked to make his comeback for the third and deciding match of the series and did so, helping Queensland re-claim the shield in Brisbane.