| 1. Round | 25/02/2023 | FC Seoul | - | Incheon United | 2:1 | ||||
| 4. Round | 18/03/2023 | Gwangju FC | - | Incheon United | 5:0 | ||||
| 5. Round | 01/04/2023 | Incheon United | - | Daegu FC | 0:0 | ||||
| 7. Round | 16/04/2023 | Gangwon FC | - | Incheon United | 0:2 | ||||
| 8. Round | 22/04/2023 | Incheon United | - | Suwon FC | 2:2 |  |
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| 9. Round | 25/04/2023 | Incheon United | - | Ulsan Hyundai FC | 0:1 | ||||
| 16. Round | 04/06/2023 | Daejeon Hana Citizen | - | Incheon United | 1:3 | ||||
| 17. Round | 07/06/2023 | Incheon United | - | FC Seoul | 1:1 | ||||
| 20. Round | 02/07/2023 | Incheon United | - | Gangwon FC | 1:0 | |
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| 22. Round | 12/07/2023 | Ulsan Hyundai FC | - | Incheon United | 1:2 | ||||
| 23. Round | 16/07/2023 | Incheon United | - | Daejeon Hana Citizen | 2:0 | ||||
| 24. Round | 22/07/2023 | FC Seoul | - | Incheon United | 0:1 | ||||
| 26. Round | 13/08/2023 | Incheon United | - | Daegu FC | 3:1 | ||||
| 27. Round | 18/08/2023 | Incheon United | - | Gwangju FC | 2:2 | ||||
| 28. Round | 25/08/2023 | Suwon FC | - | Incheon United | 1:2 | ||||
| 31. Round | 24/09/2023 | Gangwon FC | - | Incheon United | 1:1 | |
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| 32. Round | 30/09/2023 | Incheon United | - | Suwon Bluewings | 2:0 | ||||
| 33. Round | 08/10/2023 | Ulsan Hyundai FC | - | Incheon United | 0:0 |
South Korea