| 1. Round | 26/02/2023 | Jeju United | - | Suwon FC | 0:0 | ||||
| 2. Round | 04/03/2023 | Daegu FC | - | Jeju United | 1:1 | ||||
| 3. Round | 12/03/2023 | Incheon United | - | Jeju United | 1:0 | ||||
| 4. Round | 18/03/2023 | Jeju United | - | FC Seoul | 1:2 | ||||
| 5. Round | 02/04/2023 | Jeju United | - | Ulsan Hyundai FC | 1:3 | ||||
| 7. Round | 15/04/2023 | Suwon Bluewings | - | Jeju United | 2:3 | ||||
| 8. Round | 23/04/2023 | Jeju United | - | Jeonbuk FC | 0:2 | ||||
| 9. Round | 26/04/2023 | Gwangju FC | - | Jeju United | 0:1 | ||||
| 18. Round | 10/06/2023 | Ulsan Hyundai FC | - | Jeju United | 5:1 |
South Korea