2020 K League 2
| Season | 2020 | 
|---|---|
| Dates | 9 May – 21 November 2020 | 
| Champions | Jeju United (1st title)  | 
| Promoted | Jeju United Suwon FC  | 
| Matches played | 119 | 
| Goals scored | 288 (2.42 per match) | 
| Best Player | An Byong-jun | 
| Top goalscorer | An Byong-jun (21 goals)  | 
| Biggest home win | Jeju 4–0 Bucheon (26 August 2020)  | 
| Biggest away win | Chungnam Asan 0–5 Suwon FC (24 May 2020)  | 
| Highest scoring | Suwon FC 3–4 Jeonnam (18 September 2020)  | 
| Longest winning run | 3 matches  Suwon FC  | 
| Longest unbeaten run | 4 matches  Daejeon Hana Citizen Jeonnam Dragons  | 
| Longest winless run | 4 matches  Chungnam Asan Seoul E-Land  | 
← 2019  2021 →   | |
The 2020 K League 2 was the eighth season of the K League 2, the second-tier South Korean professional football league. The champions and the winners of the promotion play-offs could be promoted to the K League 1. The second, third and fourth-placed teams qualified for the promotion play-offs.
On 24 April 2020, the K League Federation confirmed that they reduced the number of matchdays to 27.