The 2023–24 UEFA Youth League knockout phase began on 6 February 2024 with the play-off round and concluded with the final on 22 April 2024 at Colovray Stadium in Nyon, Switzerland, to decide the champions of the 2023–24 UEFA Youth League.
Qualified teams
;Domestic Champions Path ==Schedule==
Knockout round play-offs
Summary The eight second round winners from the Domestic Champions Path were drawn against the eight group runners-up from the UEFA Champions League Path, with the teams from the Domestic Champions Path hosting the match. Teams from the same association could not be drawn against each other. The draw was conducted on 19 December 2023 at the UEFA headquarters in Nyon. The knockout round play-offs were played over one leg on 6 and 7 February 2024. Matches ---- ---- ---- ---- ---- ---- ---- ==Round of 16==
Round of 16
Summary The draw was conducted on 9 February 2024 at 13:00 CET in the UEFA headquarters in Nyon. Matches ---- ---- ---- ---- ---- ---- ---- ==Quarter-finals==
Quarter-finals
Summary The draw was conducted on 9 February 2024 at 13:00 CET in the UEFA headquarters in Nyon. Matches ---- ---- ---- ==Semi-finals==
Semi-finals
Summary The draw was conducted on 9 February 2024 at 13:00 CET in the UEFA headquarters in Nyon. Matches ---- ==Final==