| 1. Jornada | 26.02.2023 | Jeju United | - | Suwon FC | 0:0 | ||||
| 2. Jornada | 04.03.2023 | Daegu FC | - | Jeju United | 1:1 | ||||
| 3. Jornada | 12.03.2023 | Incheon United | - | Jeju United | 1:0 | ||||
| 4. Jornada | 18.03.2023 | Jeju United | - | FC Seoul | 1:2 | ||||
| 5. Jornada | 02.04.2023 | Jeju United | - | Ulsan Hyundai FC | 1:3 | ||||
| 7. Jornada | 15.04.2023 | Suwon Bluewings | - | Jeju United | 2:3 | ||||
| 8. Jornada | 23.04.2023 | Jeju United | - | Jeonbuk FC | 0:2 | ||||
| 9. Jornada | 26.04.2023 | Gwangju FC | - | Jeju United | 0:1 |  |
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| 10. Jornada | 30.04.2023 | Daejeon Hana Citizen | - | Jeju United | 0:3 | ||||
| 11. Jornada | 06.05.2023 | Jeju United | - | Pohang Steelers | 2:1 | ||||
| 12. Jornada | 10.05.2023 | Jeju United | - | Incheon United | 2:0 |  |
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| 13. Jornada | 14.05.2023 | Suwon FC | - | Jeju United | 0:5 | ||||
| 14. Jornada | 20.05.2023 | FC Seoul | - | Jeju United | 1:1 | ||||
| 15. Jornada | 27.05.2023 | Jeju United | - | Suwon Bluewings | 2:1 | ||||
| 16. Jornada | 03.06.2023 | Jeju United | - | Gangwon FC | 2:2 | ||||
| 18. Jornada | 10.06.2023 | Ulsan Hyundai FC | - | Jeju United | 5:1 |
Corea del Sur