2019 K League 1

The 2019 K League 1 was the 37th season of the top division of professional football in South Korea since its establishment in 1983, and the seventh season of the K League 1. Jeonbuk Hyundai Motors were the defending champions.

In the 17th round on 23 June, Pohang Steelers were leading Gangwon FC 4–0 away after 70 minutes, but Gangwon scored five unanswered goals including three in injury time to win 5–4.

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 including at least one player from the AFC confederation. Players name in bold indicates the player is registered during the mid-season transfer window.

Matches 1–22
Teams play each other twice, once at home, once away.

Matches 23–33
Teams play every other team once (either at home or away).

Matches 34–38
After 33 matches, the league splits into two sections of six teams each, with teams playing every other team in their section once (either at home or away). The exact matches are determined upon the league table at the time of the split.

Relegation play-offs
The promotion-relegation play-offs were held between the winners of the 2019 K League 2 play-offs 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.

Top scorers
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Top assist providers
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Main awards
The 2019 K League Awards was held on 2 December 2019.

Best XI
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Attendance
Attendants who entered with free ticket are not counted.