| 23. Round | 31/07/2019 | Jeonbuk FC | - | Jeju United | 2:2 | ||||
| 24. Round | 03/08/2019 | Jeju United | - | Ulsan Hyundai FC | 0:5 |  |
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| 25. Round | 10/08/2019 | Jeju United | - | Sangju Sangmu | 1:4 |  |
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| 26. Round | 18/08/2019 | Incheon United | - | Jeju United | 0:0 | |
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| 27. Round | 25/08/2019 | Jeju United | - | FC Seoul | 1:1 | ||||
| 28. Round | 30/08/2019 | Suwon Bluewings | - | Jeju United | 1:0 | |
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| 31. Round | 24/09/2019 | Pohang Steelers | - | Jeju United | 2:1 | ||||
| 32. Round | 28/09/2019 | Daegu FC | - | Jeju United | 2:2 | ||||
| 33. Round | 06/10/2019 | Jeju United | - | Gyeongnam FC | 1:2 |
Nigeria