| 1. Round | 30/08/2003 | 1. FSV Mainz 05 [Youth] | - | Stuttgarter Kickers [Youth] | 3:2 | ||||
| 2. Round | 07/09/2003 | Kickers Offenbach [Youth] | - | 1. FSV Mainz 05 [Youth] | 0:4 | ||||
| 3. Round | 14/09/2003 | 1. FSV Mainz 05 [Youth] | - | 1. FC Kaiserslautern [Youth] | 0:1 | ||||
| 4. Round | 21/09/2003 | SSV Ulm 1846 [Youth] | - | 1. FSV Mainz 05 [Youth] | 0:2 | ||||
| 5. Round | 28/09/2003 | 1. FSV Mainz 05 [Youth] | - | SC Freiburg [Youth] | 3:1 | ||||
| 6. Round | 11/10/2003 | TSV 1860 München [Youth] | - | 1. FSV Mainz 05 [Youth] | 3:2 | ||||
| 7. Round | 26/10/2003 | 1. FSV Mainz 05 [Youth] | - | SpVgg Greuther Fürth [Youth] | 1:3 | ||||
| 9. Round | 16/11/2003 | 1. FSV Mainz 05 [Youth] | - | Eintracht Frankfurt [Youth] | 2:3 | ||||
| 10. Round | 22/11/2003 | 1. FC Saarbrücken [Youth] | - | 1. FSV Mainz 05 [Youth] | 1:5 | ||||
| 11. Round | 30/11/2003 | KSV Baunatal [Youth] | - | 1. FSV Mainz 05 [Youth] | 2:3 | ||||
| 21. Round | 24/04/2004 | 1. FSV Mainz 05 [Youth] | - | VfB Stuttgart [Youth] | 1:0 |  |
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| 26. Round | 13/06/2004 | 1. FSV Mainz 05 [Youth] | - | 1. FC Nürnberg [Youth] | 5:2 |
Germany