| 1. Jornada | 26.07.2003 | NK Osijek | - | NK Inter Zaprešić | 3:2 | ||||
| 2. Jornada | 03.08.2003 | HNK Cibalia | - | NK Osijek | 3:2 | ||||
| 3. Jornada | 09.08.2003 | NK Osijek | - | NK Varteks | 3:1 |  |
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| 4. Jornada | 16.08.2003 | Dinamo Zagreb | - | NK Osijek | 4:0 | ||||
| 5. Jornada | 23.08.2003 | NK Osijek | - | NK Marsonia | 2:1 | |
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| 6. Jornada | 30.08.2003 | HNK Rijeka | - | NK Osijek | 2:0 | |
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| 10. Jornada | 04.10.2003 | NK Osijek | - | NK Zagreb | 5:2 | ||||
| 11. Jornada | 20.10.2003 | Kamen Ingrad | - | NK Osijek | 2:0 | ||||
| 12. Jornada | 25.10.2003 | NK Inter Zaprešić | - | NK Osijek | 1:1 | |
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| 13. Jornada | 02.11.2003 | NK Osijek | - | HNK Cibalia | 2:1 | |
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| 15. Jornada | 23.11.2003 | NK Osijek | - | Dinamo Zagreb | 3:2 | ||||
| 16. Jornada | 29.11.2003 | NK Marsonia | - | NK Osijek | 1:2 | |
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| 17. Jornada | 06.12.2003 | NK Osijek | - | HNK Rijeka | 2:3 | ||||
| 18. Jornada | 21.02.2004 | NK Zadar | - | NK Osijek | 1:1 | |
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| 19. Jornada | 28.02.2004 | Slaven Belupo | - | NK Osijek | 3:3 |  |
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| 20. Jornada | 06.03.2004 | NK Osijek | - | Hajduk Split | 2:3 | |
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| 22. Jornada | 20.03.2004 | NK Osijek | - | Kamen Ingrad | 3:2 |
Croacia