español
2021 Main
| Pl | W | D | L | Diff | Pts | |||
| 1 | Gimcheon Sangmu | 36 | 20 | 11 | 5 | 60:34 | 26 | 71 |
| 2 | Anyang | 36 | 17 | 11 | 8 | 51:37 | 14 | 62 |
| 3 | Daejeon | 36 | 17 | 7 | 12 | 53:48 | 5 | 58 |
| 4 | Jeonnam | 36 | 13 | 13 | 10 | 38:33 | 5 | 52 |
| 5 | Busan | 36 | 12 | 9 | 15 | 46:56 | -10 | 45 |
| 6 | Gyeongnam | 36 | 11 | 10 | 15 | 40:45 | -5 | 43 |
| 7 | Ansan Greeners | 36 | 11 | 10 | 15 | 37:49 | -12 | 43 |
| 8 | Asan | 36 | 11 | 8 | 17 | 38:41 | -3 | 41 |
| 9 | Seoul E-Land | 36 | 8 | 13 | 15 | 40:39 | 1 | 37 |
| 10 | Bucheon FC 1995 | 36 | 9 | 10 | 17 | 32:53 | -21 | 37 |
Promotion ~ K League 1
Promotion ~ K League 1 (Promotion: )
2021 Promotion
Quarter-finals
| 1 | Gangwon | Bye | |
| 3 | Anyang | Bye | |
| 4 | Daejeon | Jeonnam | 0 : 0 |
Semi-finals
| 1 | Gangwon | Bye | |
| 2 | Anyang | Daejeon | 1 : 3 |
Final
| 1 | Gangwon | Daejeon | 4 : 1, 0 : 1 |