| 1. Jornada | 29.07.2018 | NK Istra 1961 | - | Slaven Belupo | 1:1 |  |
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| 2. Jornada | 03.08.2018 | Dinamo Zagreb | - | NK Istra 1961 | 3:0 | ||||
| 3. Jornada | 12.08.2018 | NK Osijek | - | NK Istra 1961 | 3:0 | ||||
| 4. Jornada | 18.08.2018 | NK Istra 1961 | - | Lokomotiva Zagreb | 1:2 | ||||
| 5. Jornada | 26.08.2018 | HNK Rijeka | - | NK Istra 1961 | 3:3 | ||||
| 6. Jornada | 02.09.2018 | NK Istra 1961 | - | HNK Gorica | 0:2 | ||||
| 7. Jornada | 14.09.2018 | NK Inter Zaprešić | - | NK Istra 1961 | 1:2 | |
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| 8. Jornada | 23.09.2018 | NK Istra 1961 | - | Hajduk Split | 2:4 | ||||
| 9. Jornada | 01.10.2018 | NK Rudeš | - | NK Istra 1961 | 0:3 | ||||
| 10. Jornada | 06.10.2018 | Slaven Belupo | - | NK Istra 1961 | 3:1 | |
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| 12. Jornada | 27.10.2018 | NK Istra 1961 | - | NK Osijek | 1:1 | ||||
| 14. Jornada | 11.11.2018 | NK Istra 1961 | - | HNK Rijeka | 1:2 | ||||
| 15. Jornada | 24.11.2018 | HNK Gorica | - | NK Istra 1961 | 0:2 | ||||
| 17. Jornada | 08.12.2018 | Hajduk Split | - | NK Istra 1961 | 3:1 |
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