2012 Challengers League

The 2012 Challengers League was the sixth season of amateur K3 League.

The Challengers League maintained home and away season of two groups and a one-time interleague play. The winners and runners-up of both groups qualified for the championship playoffs like before. On the basis of the overall standings, however, third and fourth-placed club entered the first round, and second and first-placed club directly advanced to the semi-final and final respectively.

18 clubs participated in this season after Jungnang Chorus Mustang and Paju Citizen joined the league. Asan Citizen moved its city to Yesan before the start of the season, and changed its name to Yesan Citizen.