|Date of birth||16 December 1987|
|Place of birth||South Korea|
|Height||1.76 m (5 ft 9 1⁄2 in)|
|2003–2005||Daegu Technical High School|
|2013||→ Gangwon FC (loan)||13||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 2 July 2014.
|Revised Romanization||Gang Jeonghun|
Kang was FC Seoul's first choice from the 2010 draft intake, and made his professional debut on 25 April 2010 in Seoul's away league match against Gyeongnam FC. Aside from a few League Cup matches, Kang was unused for the remainder of the 2010 season. Kang continued with FC Seoul into the 2011 K-League season, and scored his first professional goal against Jeonbuk Hyundai Motors.
Club career statistics
- As of 15 November 2012
|Club performance||League||Cup||League Cup||Continental||Total|
|Korea Republic||League||FA Cup||League Cup||Asia||Total|
|2010||FC Seoul||K League||1||0||0||0||3||0||-||4||0|