| 3. Round | 20/08/2023 | 1. FSV Mainz 05 II | - | TSV Steinbach Haiger | 3:0 | ||||
| 4. Round | 26/08/2023 | Stuttgarter Kickers | - | 1. FSV Mainz 05 II | 4:1 | ||||
| 5. Round | 29/08/2023 | 1. FSV Mainz 05 II | - | VfR Aalen | 1:1 | ||||
| 6. Round | 03/09/2023 | Eintracht Frankfurt II | - | 1. FSV Mainz 05 II | 6:1 | ||||
| 22. Round | 02/03/2024 | VfR Aalen | - | 1. FSV Mainz 05 II | 0:0 | ||||
| 23. Round | 09/03/2024 | 1. FSV Mainz 05 II | - | Eintracht Frankfurt II | 0:1 | ||||
| 24. Round | 17/03/2024 | 1899 Hoffenheim II | - | 1. FSV Mainz 05 II | 2:0 |  |
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| 26. Round | 30/03/2024 | TSV Schott Mainz | - | 1. FSV Mainz 05 II | 1:2 | ||||
| 27. Round | 02/04/2024 | 1. FSV Mainz 05 II | - | Bahlinger SC | 2:0 |  |
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| 28. Round | 06/04/2024 | FSV Frankfurt | - | 1. FSV Mainz 05 II | 2:3 | ||||
| 29. Round | 14/04/2024 | 1. FSV Mainz 05 II | - | VfB Stuttgart II | 1:1 | |
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| 30. Round | 20/04/2024 | FC-Astoria Walldorf | - | 1. FSV Mainz 05 II | 4:1 | ||||
| 31. Round | 27/04/2024 | 1. FSV Mainz 05 II | - | SGV Freiberg | 0:2 | ||||
| 32. Round | 05/05/2024 | FC 08 Homburg | - | 1. FSV Mainz 05 II | 1:2 |
Germany