The 1990–91 season of the European Cup Winners' Cup was won by Manchester United against Barcelona. The victory for United was significant as it was the season English clubs returned to European football, after completing a five-year ban as a result of the Heysel Stadium disaster.

The UEFA Cup Winners' Cup was a European football club competition contested annually by the winners of domestic cup competitions. The cup was, chronologically, the second seasonal inter-European club competition organised by UEFA. The tournament ran for 39 seasons, with the final edition held in 1998–99, after which it was discontinued.