Template:2020 K League 1 table
| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification or relegation[a] |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Jeonbuk Hyundai Motors (C) | 27 | 19 | 3 | 5 | 46 | 21 | +25 | 60 | Qualification for Champions League group stage |
| 2 | Ulsan Hyundai | 27 | 17 | 6 | 4 | 54 | 23 | +31 | 57 | |
| 3 | Pohang Steelers | 27 | 15 | 5 | 7 | 56 | 35 | +21 | 50 | |
| 4 | Sangju Sangmu[b] (R) | 27 | 13 | 5 | 9 | 34 | 36 | −2 | 44 | Relegation to K League 2 |
| 5 | Daegu FC | 27 | 10 | 8 | 9 | 43 | 39 | +4 | 38 | Qualification for Champions League group stage |
| 6 | Gwangju FC | 27 | 6 | 7 | 14 | 32 | 46 | −14 | 25 | |
| 7 | Gangwon FC | 27 | 9 | 7 | 11 | 36 | 41 | −5 | 34 | |
| 8 | Suwon Samsung Bluewings | 27 | 8 | 7 | 12 | 27 | 30 | −3 | 31 | |
| 9 | FC Seoul | 27 | 8 | 5 | 14 | 23 | 44 | −21 | 29 | |
| 10 | Seongnam FC | 27 | 7 | 7 | 13 | 24 | 37 | −13 | 28 | |
| 11 | Incheon United | 27 | 7 | 6 | 14 | 25 | 35 | −10 | 27 | |
| 12 | Busan IPark (R) | 27 | 5 | 10 | 12 | 25 | 38 | −13 | 25 | Relegation to K League 2 |
Source: K League
Rules for classification: 1) Points; 2) Goals scored; 3) Goal difference; 4) Wins; 5) Head-to-head points
(C) Champions; (R) Relegated
Notes:
Rules for classification: 1) Points; 2) Goals scored; 3) Goal difference; 4) Wins; 5) Head-to-head points
(C) Champions; (R) Relegated
Notes:
- ^ Teams are split into two groups (Final A and Final B) after each have played 22 matches.
- ^ Sangju Sangmu were a military team and were not eligible to represent South Korea in the AFC club competitions. Additionally, they were relegated to K League 2 regardless of their final position by moving their stronghold the next season.