| Lịch thi đấu UEFA Champions League 2023-24 - Lượt trận thứ nhất | |
| Group F - 1 | |
| 19/09/2023 23:45:00 |  AC Milan 0-0  Newcastle |
| 20/09/2023 02:00:00 |  Paris ịchthiđấubóngđáty so laligaSaint Germain 2-0  Borussia Dortmund |
| Group G - 1 | |
| 19/09/2023 23:45:00 |  BSC Young Boys 1-3  RB Leipzig |
| 20/09/2023 02:00:00 |  Manchester City 3-1  FK Crvena Zvezda |
| Group E - 1 | |
| 20/09/2023 02:00:00 |  Feyenoord 2-0  Celtic |
| 20/09/2023 02:00:00 |  Lazio 1-1  Atletico Madrid |
| Group H - 1 | |
| 20/09/2023 02:00:00 |  Barcelona 5-0  Antwerp |
| 20/09/2023 02:00:00 |  Shakhtar Donetsk 1-3  FC Porto |
| Group A - 1 | |
| 20/09/2023 23:45:00 |  Galatasaray 2-2  FC Copenhagen |
| 21/09/2023 02:00:00 |  Bayern Munich 4-3  Manchester United |
| Group C - 1 | |
| 20/09/2023 23:45:00 |  Real Madrid 1-0  Union Berlin |
| 21/09/2023 02:00:00 |  SC Braga 1-2  Napoli |
| Group B - 1 | |
| 21/09/2023 02:00:00 |  Sevilla 1-1  Lens |
| 21/09/2023 02:00:00 |  Arsenal 4-0  PSV Eindhoven |
| Group D - 1 | |
| 21/09/2023 02:00:00 |  Benfica 0-2  Red Bull Salzburg |
| 21/09/2023 02:00:00 |  Real Sociedad 1-1  Inter |
(责任编辑：Cúp C2)
