The 1991 Football League Third Division play-off Final was an association football match which was played on 1 June 1991 at Wembley Stadium, London, between Tranmere Rovers and Bolton Wanderers. It was to determine the fourth and final team to gain promotion from the Football League Third Division, the third tier of English football, to the Second Division. The top three teams of the 1990–91 Football League Third Division, Cambridge United, Southend United and Grimsby Town, gained automatic promotion, while the teams placed from fourth to seventh place took part in play-off semi-finals; the winners then competed for the final place in the Second Division for the 1991–92 season. Bolton and Tranmere beat Bury and Brentford, respectively, in the semi-finals.