| 23. Round | 05/02/2023 | SV Drochtersen/Assel | - | FC St. Pauli II | 5:2 |  |
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| 24. Round | 12/02/2023 | Blau-Weiß Lohne | - | FC St. Pauli II | 3:3 | ||||
| 25. Round | 19/02/2023 | FC St. Pauli II | - | Atlas Delmenhorst | 1:0 | |
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| 26. Round | 26/02/2023 | FC Teutonia 05 | - | FC St. Pauli II | 0:1 | |
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| 27. Round | 05/03/2023 | FC St. Pauli II | - | Schwarz-Weiß Rehden | 1:1 | ||||
| 29. Round | 19/03/2023 | FC St. Pauli II | - | VfB Lübeck | 2:1 |  |
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| 30. Round | 26/03/2023 | TSV Havelse | - | FC St. Pauli II | 2:2 | |
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| 31. Round | 02/04/2023 | FC St. Pauli II | - | SSV Jeddeloh II | 2:1 | |
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| 28. Round | 06/04/2023 | Weiche Flensburg 08 | - | FC St. Pauli II | 0:1 | |
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| 32. Round | 16/04/2023 | Eintracht Norderstedt | - | FC St. Pauli II | 1:3 | |
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| 33. Round | 21/04/2023 | FC St. Pauli II | - | Hamburger SV II | 2:4 | |
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| 35. Round | 07/05/2023 | FC St. Pauli II | - | Bremer SV | 2:1 | ||||
| 36. Round | 13/05/2023 | Hannover 96 II | - | FC St. Pauli II | 1:0 | ||||
| 37. Round | 21/05/2023 | FC St. Pauli II | - | VfV Hildesheim | 2:1 | ||||
| 38. Round | 26/05/2023 | Holstein Kiel II | - | FC St. Pauli II | 3:5 | |
Germany