2018 in South Korean football

This article shows a summary of the 2018 football season in South Korea.

FIFA World Cup
For the combined qualification matches for the 2018 FIFA World Cup and the 2019 AFC Asian Cup, South Korea won all seven matches without conceding a goal in the second round but following a series of poor results in the third round of qualifiers, including losses to China and Qatar, the former manager Uli Stielike was sacked and was replaced by under-23 coach Shin Tae-yong for the remainder of the qualifying round. Under Shin Tae-yong, the team managed to qualify as the second-placed team in their group following two goalless draws against Iran and Uzbekistan, sending South Korea to the World Cup for the ninth consecutive time. Shin quickly tested various tactics after the qualifiers, but he had difficulty carrying out his plan due to injuries of many players. Some of them were eventually excluded from the team.

At the 2018 World Cup, they lost their first game against Sweden 1–0 after conceding from a penalty. They then faced Mexico and lost 2–1 after conceding another penalty. However, despite their two consecutive losses, South Korea was not eliminated just yet. To have any chance of advancing, South Korea would have to win their final group stage match against the defending champions Germany by at least two goals and Mexico would have to defeat Sweden in its last group stage game. South Korea for its part did what it had to do to stay in contention and won 2–0 against Germany with goals from Kim Young-gwon and Son Heung-min, causing them to be eliminated in the first round for the first time in 80 years. Germany had 28 shots with 6 on target, but the South Korea's defense, led by keeper Jo Hyeon-woo, did not concede once. However, Mexico lost to Sweden that same day and thus South Korea ultimately finished third in the group. As a result, South Korea saved Mexico from being eliminated and Mexican fans heavily praised the Koreans and celebrated their victory in front of the South Korean embassy. The match is also called the "Miracle of Kazan" in South Korea although they dropped out of the tournament.

Promotion playoffs
FC Seoul remains in the K League 1.

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 playoff
When the match was finished as a draw, its winners were decided on the regular season rankings without extra time and the penalty shoot-out. Therefore, Chungju Citizen was promoted to the K3 League Advanced after the draw.