The 2023–24 UEFA Champions League knockout phase began on 13 February with the round of 16 and ended on 1 June 2024 with the final at Wembley Stadium in London, England, to decide the champions of the 2023–24 UEFA Champions League. A total of 16 teams competed in the knockout phase.
Times are CET/CEST, as listed by UEFA (local times, if different, are in parentheses).