The K3 League 2008 was the second season of K3 League. It operated in two stages, with the winners of each stage and the two runners-up advancing to the post-season championship playoffs. The five clubs on high rank also earned a spot to the 2009 Korean FA Cup competition.
The league began on 22 May 2008, and ended on 6 December 2008.
1st leg
2nd leg
Yangju FC 2–2 Hwasung Shinwoo Electronics on aggregate. Yangju FC won by away goals.