| 2. Round | 02/08/2003 | Dinamo Zagreb | - | NK Marsonia | 7:0 | ||||
| 3. Round | 09/08/2003 | NK Marsonia | - | NK Zadar | 4:1 | ||||
| 5. Round | 23/08/2003 | NK Osijek | - | NK Marsonia | 2:1 | ||||
| 6. Round | 30/08/2003 | NK Marsonia | - | Slaven Belupo | 0:0 | ||||
| 7. Round | 13/09/2003 | Hajduk Split | - | NK Marsonia | 5:0 | ||||
| 10. Round | 04/10/2003 | NK Marsonia | - | NK Inter Zaprešić | 0:1 | ||||
| 11. Round | 18/10/2003 | HNK Cibalia | - | NK Marsonia | 2:4 | ||||
| 13. Round | 02/11/2003 | NK Marsonia | - | Dinamo Zagreb | 1:3 |
Croatia