The 2012 Football League One play-off final was an association football match which was played on 26 May 2012 at Wembley Stadium, London, between Huddersfield Town and Sheffield United to determine the third and final team to gain promotion from Football League One to the Football League Championship. The top two teams of the 2011–12 Football League One season, Charlton Athletic and Sheffield Wednesday, gained automatic promotion to the Championship, while the teams placed from third to sixth position in the table took part in play-offs. The winners of the play-off semi-finals competed for the final place for the 2012–13 season in the Championship.

Huddersfield Town Association Football Club is a professional association football club based in Huddersfield, West Yorkshire, England. The team competes in the EFL Championship, the second level of the English football league system. They will play in EFL League One in the 2024–25 season after suffering relegation.