The 2013 Korea National League was the eleventh season of the Korea National League.
A total of ten clubs participated in this season after four clubs were dropped out from the league.
Ansan H FC (Goyang Hi FC), Suwon City (Suwon FC), and Chungju Hummel started to participate in a new professional league K League 2.
Kookmin Bank decided to dissolve their football club Goyang KB Kookmin Bank and sponsor K League 2 club FC Anyang.
[2] The post-season playoffs were contested by four teams.