The 2011 Korea National League was the ninth season of the Korea National League. The number of post-season playoffs' teams were increased to six and the playoffs were operated in the same format as the K League Championship. Before the start of the 2011 season, Yesan FC withdrew from the league due to its financial difficulty.
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Hyundai Mipo Dockyard won 2âÂÂ1 on aggregate.
Danilo Teixeira who played the least time among top goalscorers won the top goalscorer award