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.
Regular season
Group A
Group B
Championship playoffs
Semi-finals
----Final
----''Gyeongju Citizen won 1–0 on aggregate.''