| 5. Round | 16/09/2023 | 1. FSV Mainz 05 [Youth] | - | SV Sandhausen [Youth] | 4:2 | ||||
| 6. Round | 24/09/2023 | FC Augsburg [Youth] | - | 1. FSV Mainz 05 [Youth] | 1:2 | ||||
| 7. Round | 30/09/2023 | 1. FSV Mainz 05 [Youth] | - | VfB Stuttgart [Youth] | 3:2 | ||||
| 8. Round | 21/10/2023 | 1. FSV Mainz 05 [Youth] | - | Bayern München [Youth] | 1:2 | ||||
| 9. Round | 29/10/2023 | Eintracht Frankfurt [Youth] | - | 1. FSV Mainz 05 [Youth] | 0:0 | ||||
| 10. Round | 04/11/2023 | 1. FSV Mainz 05 [Youth] | - | 1. FC Heidenheim 1846 [Youth] | 2:0 | ||||
| 11. Round | 12/11/2023 | Karlsruher SC [Youth] | - | 1. FSV Mainz 05 [Youth] | 5:3 | ||||
| 21. Round | 06/04/2024 | Bayern München [Youth] | - | 1. FSV Mainz 05 [Youth] | 2:3 | ||||
| 22. Round | 13/04/2024 | 1. FSV Mainz 05 [Youth] | - | Eintracht Frankfurt [Youth] | 2:5 | ||||
| 23. Round | 21/04/2024 | 1. FC Heidenheim 1846 [Youth] | - | 1. FSV Mainz 05 [Youth] | 4:0 | ||||
| 24. Round | 28/04/2024 | 1. FSV Mainz 05 [Youth] | - | Karlsruher SC [Youth] | 2:1 |  |
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| 26. Round | 10/05/2024 | 1. FSV Mainz 05 [Youth] | - | 1899 Hoffenheim [Youth] | 2:3 |
Germany