| 2. Journée | 23.08.2020 | NK Osijek | - | Hajduk Split | 1:2 | ||||
| 10. Journée | 31.10.2020 | Slaven Belupo | - | NK Osijek | 0:1 | ||||
| 8. Journée | 04.11.2020 | NK Osijek | - | Lokomotiva Zagreb | 2:1 | ||||
| 11. Journée | 07.11.2020 | Hajduk Split | - | NK Osijek | 1:1 |  |
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| 13. Journée | 29.11.2020 | HNK Rijeka | - | NK Osijek | 1:1 | ||||
| 14. Journée | 05.12.2020 | NK Osijek | - | NK Varaždin | 1:0 | ||||
| 15. Journée | 12.12.2020 | HNK Gorica | - | NK Osijek | 4:1 | ||||
| 16. Journée | 19.12.2020 | NK Osijek | - | HNK Šibenik | 1:0 | ||||
| 18. Journée | 30.01.2021 | NK Osijek | - | NK Istra 1961 | 1:0 | ||||
| 20. Journée | 06.02.2021 | NK Osijek | - | Hajduk Split | 2:0 | ||||
| 21. Journée | 13.02.2021 | Dinamo Zagreb | - | NK Osijek | 1:0 | ||||
| 31. Journée | 25.04.2021 | HNK Rijeka | - | NK Osijek | 0:0 | ||||
| 32. Journée | 02.05.2021 | NK Osijek | - | NK Varaždin | 1:1 | |
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| 34. Journée | 11.05.2021 | NK Osijek | - | HNK Šibenik | 3:0 | ||||
| 35. Journée | 15.05.2021 | Lokomotiva Zagreb | - | NK Osijek | 0:2 | |
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