The 2019 K League 2 was the seventh season of the K League 2, the second-highest division in the South Korean football league system. Its champions could be promoted to the K League 1 the next season, and second, third and fourth-placed team advanced to the promotion playoffs.

Teams

Team changes

Relegated from K League 1 * Jeonnam Dragons Promoted to K League 1 * Seongnam FC

Stadiums

Personnel and sponsoring

Note: Flags indicate national team as has been defined under

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eligibility rules. Players may hold more than one non-FIFA nationality.

Managerial changes

Foreign players

Restricting the number of foreign players strictly to four per team, including a slot for a player from

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countries. A team could use four foreign players on the field each game. Players in bold are players who joined midway through the competition.

League table

Positions by matchday

Round 1–18

Round 19–36

Results

Matches 1–18

Matches 19–36

Promotion playoffs

When the first round or semi-final match was finished as a draw, its winners were decided on the regular season rankings without extra time and the penalty shoot-out.

Bracket

First round

Semi-final

Final

The promotion-relegation playoffs were held between the winners of the 2019 K League 2 playoffs and the 11th-placed club of the 2019 K League 1. ----- ''Busan IPark won 2–0 on aggregate and were promoted to the K League 1, while Gyeongnam FC were relegated to the K League 2.''