| Date | Home | Away | Group | Result |
|---|---|---|---|---|
| 12/12/23 17:45 | RC Lens | FC Sevilla | Group B | 2-1 |
| 12/12/23 17:45 | PSV Eindhoven | Arsenal FC | Group B | 1-1 |
| 12/12/23 20:00 | FC Red Bull Salzburg | Benfica Lisbon | Group D | 1-3 |
| 12/12/23 20:00 | Inter Milan | Real Sociedad | Group D | 0-0 |
| 12/12/23 20:00 | 1. FC Union Berlin | Real Madrid | Group C | 2-3 |
| 12/12/23 20:00 | SSC Napoli | Sporting Braga | Group C | 2-0 |
| 12/12/23 20:00 | FC Copenhagen | Galatasaray Istanbul | Group A | 1-0 |
| 12/12/23 20:00 | Manchester United | FC Bayern Munich | Group A | 0-1 |
| 13/12/23 17:45 | Red Star Belgrad | Manchester City | Group G | 2-3 |
| 13/12/23 17:45 | RB Leipzig | Young Boys Bern | Group G | 2-1 |
| 13/12/23 20:00 | FC Porto | Schachtjor Donezk | Group H | 5-3 |
| 13/12/23 20:00 | Royal Antwerp FC | FC Barcelona | Group H | 3-2 |
| 13/12/23 20:00 | Borussia Dortmund | Paris St. Germain | Group F | 1-1 |
| 13/12/23 20:00 | Newcastle United | AC Milan | Group F | 1-2 |
| 13/12/23 20:00 | Celtic Glasgow | Feyenoord Rotterdam | Group E | 2-1 |
| 13/12/23 20:00 | Atletico Madrid | Lazio Rom | Group E | 2-0 |