The 2017–18 UEFA Europa League was the 47th season of Europe's secondary club football tournament organised by UEFA, and the 9th season since it was renamed from the UEFA Cup to the UEFA Europa League.
As winners, Atlético Madrid earned the right to play against the winners of the 2017–18 UEFA Champions League, Real Madrid, in the 2018 UEFA Super Cup. Moreover, they would also have been automatically qualified for the 2018–19 UEFA Champions League group stage, but since they had already qualified through their league performance, the berth reserved was given to the third-placed team of the 2017–18 Ligue 1, the fifth-ranked association according to next season's access list.
Manchester United qualified for the 2017–18 UEFA Champions League as the title holders of Europa League. They were unable to defend their title as they qualified for the Champions League knockout phase.