| 2. Round | 29/07/2023 | NK Istra 1961 | - | Dinamo Zagreb | 0:3 | ||||
| 4. Round | 13/08/2023 | NK Istra 1961 | - | NK Osijek | 4:4 | ||||
| 5. Round | 19/08/2023 | Slaven Belupo | - | NK Istra 1961 | 2:2 | ||||
| 6. Round | 27/08/2023 | NK Istra 1961 | - | NK Rudeš | 0:0 | ||||
| 11. Round | 08/10/2023 | Dinamo Zagreb | - | NK Istra 1961 | 3:0 | ||||
| 13. Round | 28/10/2023 | NK Osijek | - | NK Istra 1961 | 3:1 | ||||
| 15. Round | 11/11/2023 | NK Rudeš | - | NK Istra 1961 | 0:4 | ||||
| 16. Round | 26/11/2023 | NK Istra 1961 | - | Hajduk Split | 0:2 | ||||
| 17. Round | 01/12/2023 | NK Istra 1961 | - | NK Varaždin | 2:0 |  |
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| 18. Round | 09/12/2023 | HNK Gorica | - | NK Istra 1961 | 0:0 | ||||
| 19. Round | 16/12/2023 | Lokomotiva Zagreb | - | NK Istra 1961 | 3:0 | ||||
| 25. Round | 02/03/2024 | Hajduk Split | - | NK Istra 1961 | 1:0 | ||||
| 26. Round | 08/03/2024 | NK Varaždin | - | NK Istra 1961 | 2:2 | ||||
| 27. Round | 17/03/2024 | NK Istra 1961 | - | HNK Gorica | 0:0 | ||||
| 28. Round | 29/03/2024 | NK Istra 1961 | - | Lokomotiva Zagreb | 0:0 | ||||
| 29. Round | 07/04/2024 | Dinamo Zagreb | - | NK Istra 1961 | 4:1 |
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