Moon Sung-keun (born May 28, 1953- ) is a South Korean actor. Moon was born as the son of Rev. Moon Ik-hwan in Tokyo, Japan, in 1953. After graduation from Sogang University with a bachelor degree in trading, Moon had worked as a salary man for 8 years. Moon stared acting on stage since 1985. Moon's first film debut work is the 1990 film Black Republic directed by Park Kwang-su.