The 1990–91 season was the 111th season of competitive football in England.
Arsenal won the First Division after losing just one of their league matches all season. Liverpool finished runners-up. Third place went to Crystal Palace.
Newly promoted Leeds United had a good season back in the First Division as they finished fourth, and also reached the semi-finals of the League Cup.
At the bottom of the table, Derby County went down in last place with just five wins all season despite the 17 league goals of Welsh striker Dean Saunders, who was then sold to Liverpool. The other relegation place went to Sunderland.
Joe Royle's Oldham Athletic side won the Second Division championship ahead of West Ham United, who were promoted as runners-up. Joining them in promotion were League Cup winners Sheffield Wednesday, who finished in third place. Neil Warnock guided Notts County to a second successive victory in the promotion play-offs.
Hull City and West Bromwich Albion were relegated.
Champions Cambridge United, runners-up Southend United and third-placed Grimsby Town occupied the automatic promotion places and all achieved second successive promotions. The fourth promotion place went to play-off winners Tranmere Rovers.