| 4. Ronde | 18.03.2023 | Jeju United | - | FC Seoul | 1:2 | ||||
| 5. Ronde | 02.04.2023 | Jeju United | - | Ulsan Hyundai FC | 1:3 |  |
|||
| 6. Ronde | 09.04.2023 | Gangwon FC | - | Jeju United | 0:1 | ||||
| 7. Ronde | 15.04.2023 | Suwon Bluewings | - | Jeju United | 2:3 | ||||
| 8. Ronde | 23.04.2023 | Jeju United | - | Jeonbuk FC | 0:2 | ||||
| 9. Ronde | 26.04.2023 | Gwangju FC | - | Jeju United | 0:1 | |
|||
| 10. Ronde | 30.04.2023 | Daejeon Hana Citizen | - | Jeju United | 0:3 | ||||
| 11. Ronde | 06.05.2023 | Jeju United | - | Pohang Steelers | 2:1 | ||||
| 12. Ronde | 10.05.2023 | Jeju United | - | Incheon United | 2:0 | |
|||
| 15. Ronde | 27.05.2023 | Jeju United | - | Suwon Bluewings | 2:1 | ||||
| 17. Ronde | 06.06.2023 | Pohang Steelers | - | Jeju United | 2:1 | |
Zuid-Korea