2019 K League 2
The 2019 K League 2 was the seventh season of the K League 2, the second-tier South Korean professional league for association football clubs since its establishment in 2013, and the second one with its current name, the K League 2. The top-ranked team and the winners of the promotion play-offs among three clubs ranked between second and fourth got promoted to the 2020 K League 1.
Teams
Since the champions from the previous season, Asan Mugunghwa, didn't get promoted because of administrative reasons, Seongnam FC, the second-placed team of the 2018 K League 2, was granted promotion to the 2019 K League 1. Jeonnam Dragons were relegated from the top tier. A total of ten teams contested in the league.| Team | City | Home venue |
| Ansan Greeners | Ansan | Ansan Wa~ Stadium |
| Asan Mugunghwa | Asan | Yi Sun-sin Stadium |
| Bucheon FC 1995 | Bucheon | Bucheon Stadium |
| Busan IPark | Busan | Busan Gudeok Stadium |
| Daejeon Citizen | Daejeon | Daejeon World Cup Stadium |
| FC Anyang | Anyang | Anyang Stadium |
| Gwangju FC | Gwangju | Gwangju World Cup Stadium |
| Jeonnam Dragons | Jeonnam | Gwangyang Stadium |
| Seoul E-Land | Seoul | Seoul Olympic Stadium |
| Suwon FC | Suwon | Suwon Sports Complex |
Stadiums
Personnel and kits
Note: Flags indicate national team as has been defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.| Team | Manager | Kit manufacturer1 | Main sponsor1 |
| Ansan Greeners |  Lim Wan-Sup | Lupo Finta | Ansan Government |
| Asan Mugunghwa | Park Dong-hyuk | Mizuno | Asan Government and Korean Police Agency |
| Bucheon FC 1995 |  Song Sun-ho | Astore | Bucheon Government |
| Busan IPark | Cho Deok-je | Adidas | Hyundai Development Company |
| Daejeon Citizen | Lee Heung-sil | Joma | Daejeon Government |
| FC Anyang | Kim Hyung-yul | Joma | Anyang Government |
| Gwangju FC | Park Jin-sub | Kelme | Gwangju Government |
| Jeonnam Dragons | Jeon Kyung-jun | Joma | POSCO |
| Seoul E-Land | Woo Sung-yong | New Balance | E-Land |
| Suwon FC | Kim Dae-eui | Hummel | Suwon Government |
Managerial changes
| Team | Outgoing manager | Manner of departure | Date of vacancy | Incoming manager | Date of appointment |
| Daejeon Citizen | | Sacked | 21 May 2019 | | 21 May 2019 |
| Seoul E-Land | | Sacked | 22 May 2019 | | 17 June 2019 |
| Daejeon Citizen | | End of caretaker spell | 1 July 2019 | | 1 July 2019 |
| Jeonnam Dragons |  | Mutual consent | 27 July 2019 | | 27 July 2019 |
| Suwon FC | | Resigned | 29 October 2019 | | 29 October 2019 |
Foreign players
Restricting the number of foreign players strictly to four per team, including a slot for a player from AFC countries. A team could use four foreign players on the field each game. Players in bold are players who joined midway through the competition. Note that An Byong-jun, who is a North Korean player playing for Suwon FC, was deemed to be a native player.| Club | Player 1 | Player 2 | Player 3 | Player 4 | Asian player |
| Ansan Greeners | Fauver | Gustavo Vintecinco |  Masatoshi Ishida | ||
| Bucheon FC 1995 | Nilson Júnior |  Marlon de Jesús |  Nan Song | ||
| Busan IPark | Diego Maurício | Rômulo |  Soma Novothny |  Aleksandar Šušnjar | |
| Daejeon Citizen | Matheus Pato | Rafael Ramazotti |  Aurelian Chițu | ||
| FC Anyang | Alex |  Manuel Palacios |  Mykola Kovtalyuk | ||
| Gwangju FC | Felipe | Ratinho | Willyan |  Rustam Ashurmatov | |
| Jeonnam Dragons | Bruno Baio | Bruno Nunes | Wanderson Macedo |  Nick Ansell | |
| Seoul E-Land | Alex | Douglas Coutinho | Róbson | Chikashi Masuda | |
| Suwon FC |  Henri Anier |  Chisom Egbuchulam | Jovlon Ibrokhimov |
League table
Positions by matchday
Round 1–18
Round 19–36
Results
Matches 1–18
Matches 19–36
Promotion-relegation playoffs
The promotion-relegation playoffs were held between the clubs placed in the 2nd, 3rd, and 4th position in the 2019 K League 2, and the 11th-placed club of the 2019 K League 1. If scores were tied after regular time in the Semi-playoff and Playoff rounds, the higher-placed team would advance to the next phase. The same conditions did not apply for the final round of Promotion-Relegation playoffs, which was instead held over two legs.Semi-playoff
FC Anyang advanced due to its higher position after the regular season.Playoff
Promotion-relegation playoffs
First leg
Second leg
Busan IPark was promoted to the 2020 K League 1 on aggregate score.Season statistics
Top scorers
| Rank | Player | Club | Goals |
| 1 | Felipe | Gwangju FC | 19 |
| 2 |  Chisom Egbuchulam | Suwon FC | 18 |
| 3 | Cho Gue-sung | FC Anyang | 14 |
| 4 | Lee Dong-jun | Busan IPark | 13 |
| 4 | Rômulo | Busan IPark | 13 |
| 4 | Lee Jeong-hyeop | Busan IPark | 13 |
| 4 | Alex Lima | FC Anyang | 13 |
| 8 | Ko Moo-yeol | Asan Mugunghwa | 12 |
| 8 | Soma Novothny | Busan IPark | 12 |
Top assists
| Rank | Player | Club | Assists |
| 1 | Jeong Jae-hee | Jeonnam Dragons | 10 |
| 2 | Chang Hyuk-jin | Ansan Greeners | 9 |
| 3 | Kim Sang-won | FC Anyang | 8 |
| 4 | Park Jong-woo | Busan IPark | 7 |
| 4 | Baek Sung-dong | Suwon FC | 7 |
| 4 | Lee Dong-jun | Busan IPark | 7 |
| 7 | Kim Min-kyun | Seoul E-Land | 6 |
| 7 | Manuel Palacios | FC Anyang | 6 |
| 9 | Ju Se-jong | Asan Mugunghwa | 5 |
| 9 | Róbson | Seoul E-Land | 5 |
| 9 | Alex Lima | FC Anyang | 5 |
| 9 | Kim Ryun-do | Bucheon FC 1995 | 5 |