The 2010 Korean League Cup, also known as the POSCO Cup 2010, was the 23rd competition of the Korean League Cup. It began on 22 May 2010, and ended on 25 August 2010.
The three matches of Gwangju Sangmu were revealed as fixed matches.
The participating teams were assigned to one of three groups according to the 2009 K League table.
<onlyinclude></onlyinclude>
<onlyinclude></onlyinclude>
<onlyinclude></onlyinclude>
Source: