| Season: | 2011 |
| Dates: | 5 March - 13 November 2011 |
| Winners: | Gyeongju Citizen (2nd title) |
| Best Player: | Kim Min-seop[1] |
| Matches: | 180 |
| Total Goals: | 668 |
| Prevseason: | 2010 |
| Nextseason: | 2012 |
The 2011 Challengers League was the fifth season of amateur K3 League. In this season, the K3 League was renamed the "Challengers League", and 16 clubs participated after Samcheok Shinwoo Electronics and Yongin Citizen withdrew from the 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.
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----Gyeongju Citizen won 4–3 on aggregate.