| 8. Round | 14/04/2012 | Pohang Steelers | - | Jeju United | 2:3 | ||||
| 9. Round | 21/04/2012 | FC Seoul | - | Jeju United | 1:1 | ||||
| 10. Round | 29/04/2012 | Jeju United | - | Gyeongnam FC | 3:1 | ||||
| 16. Round | 17/06/2012 | Suwon Bluewings | - | Jeju United | 1:1 | ||||
| 17. Round | 23/06/2012 | Jeju United | - | Pohang Steelers | 0:1 | ||||
| 18. Round | 27/06/2012 | Jeju United | - | Busan IPark | 5:2 | ||||
| 19. Round | 30/06/2012 | Daegu FC | - | Jeju United | 2:0 | ||||
| 20. Round | 12/07/2012 | Ulsan Hyundai FC | - | Jeju United | 2:2 | ||||
| 22. Round | 21/07/2012 | Jeju United | - | Chunnam Dragons | 6:0 | ||||
| 24. Round | 28/07/2012 | Jeju United | - | FC Seoul | 3:3 |  |
|||
| 25. Round | 04/08/2012 | Sangju Sangmu | - | Jeju United | 2:1 | ||||
| 26. Round | 08/08/2012 | Gangwon FC | - | Jeju United | 1:1 | ||||
| 27. Round | 11/08/2012 | Jeju United | - | Gwangju FC | 0:2 | ||||
| 30. Round | 26/08/2012 | Incheon United | - | Jeju United | 0:0 |
South Korea