2017 in South Korean football

This article shows a summary of the 2017 football season in South Korea.

Promotion playoffs
Sangju Sangmu remains in the K League Classic.

Championship playoffs
When the first round and semi-final matches were finished as draws, their winners were decided on the regular season rankings without extra time and the penalty shoot-out.

Promotion playoffs
When a match was finished as a draw, its winners were decided on the regular season rankings without extra time and the penalty shoot-out.