Lee Kyu-Sup (born November 13, 1977) is a former South Korean professional basketball player. He plays for the Seoul Samsung Thunders of the Korean Basketball League. Lee also plays for the South Korea national basketball team and made his senior national team debut at the FIBA Asia Championship 2009. Previously, he competed for the Korean junior national team at the 1995 World Championship for Junior Men and 1997 U-22 World Championship.