2010 K3 League

The 2010 K3 League was the fourth season of amateur K3 League. The participating clubs were divided into two groups, and the winners and runners-up of both groups qualified for the championship playoffs. All clubs had interleague play once after playing home and away season in each group. Jeonju Ongoeul withdrew from the league, but Chuncheon FC and Yeonggwang FC joined the league.

Final
Gyeongju Citizen won 1–0 on aggregate.