| 1. Round | 01/08/2004 | VfL Wolfsburg II | - | Arminia Bielefeld II | 1:1 | ||||
| 2. Round | 07/08/2004 | Arminia Bielefeld II | - | KFC Uerdingen 05 | 4:1 |  |
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| 6. Round | 29/08/2004 | Arminia Bielefeld II | - | 1. FC Köln II | 4:1 |  |
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| 7. Round | 03/09/2004 | VfL Osnabrück | - | Arminia Bielefeld II | 2:2 | ||||
| 8. Round | 14/09/2004 | Arminia Bielefeld II | - | Hamburger SV II | 3:4 | ||||
| 9. Round | 17/09/2004 | FC St. Pauli | - | Arminia Bielefeld II | 2:1 | ||||
| 16. Round | 06/11/2004 | Chemnitzer FC | - | Arminia Bielefeld II | 5:1 | ||||
| 20. Round | 05/12/2004 | Arminia Bielefeld II | - | VfL Wolfsburg II | 1:1 | ||||
| 25. Round | 13/03/2005 | 1. FC Köln II | - | Arminia Bielefeld II | 1:1 | ||||
| 26. Round | 19/03/2005 | Arminia Bielefeld II | - | VfL Osnabrück | 1:3 | ||||
| 22. Round | 23/03/2005 | Arminia Bielefeld II | - | Hertha BSC II | 0:1 | ||||
| 28. Round | 26/03/2005 | Arminia Bielefeld II | - | FC St. Pauli | 1:4 |
Germany