2017–18 UEFA Youth League knockout phase

The 2017–18 UEFA Youth League knockout phase began on 6 February 2018 and concluded on 23 April 2018 with the final at Colovray Stadium in Nyon, Switzerland, to decide the champions of the 2017–18 UEFA Youth League.

The knockout phase (knockout round play-offs and round of 16 onwards), played as a single-elimination tournament, involved 24 teams: 16 teams which qualified from the UEFA Champions League Path (eight group winners and eight group runners-up), and eight teams which qualified from the Domestic Champions Path (eight second round winners):[1] Each tie was played over a single match.

[1] The draw for the round of 16 onwards was held on 9 February 2018, 13:00 CET, at the UEFA headquarters in Nyon, Switzerland.

The semi-finals were played on 20 April 2018 at Colovray Stadium, Nyon.

[2][18] The final was played on 23 April 2018 at Colovray Stadium, Nyon.