2022 K3 League

The 2022 K3 League was the third season of the K3 League as a semi-professional league. Its regular season was held from 26 February to 29 October 2022.

Defending champions Gimpo FC became a professional club and joined the K League. Cheonan City and Cheongju FC are also going to be join the K League in the next year.

The 16 participating teams played each other twice, and the bottom team advanced to the relegation play-off. The K3 League Championship which had been held in play-off format to decide champions before was not held since this year.

Team changes
Promoted from K4 League
 * Pocheon Citizen
 * Siheung Citizen
 * Dangjin Citizen

Promoted to K League 2
 * Gimpo FC

Relegated to K4 League
 * Pyeongtaek Citizen

Relegation play-off
The relegation play-off (K4 League promotion play-offs final) was contested between the bottom team of K3 League and the winners of K4 League play-off (semi-final).