Choi Sung-Kuk (born 8 February 1983) is a former South Korean footballer who played the forward position.
He was part of the South Korea 2004 Olympic football team, who finished second in Group A, making it through to the next round, before being defeated by silver medal winners Paraguay.
He was also capped for South Korean U-20 team at 2003 FIFA World Youth Championship.
A member of Korea's squad for the 2007 AFC Asian Cup, he scored a goal in the opening match against Saudi Arabia.