Go Se-won (born December 13, 1977) is a South Korean actor. Go began his acting career in musical theatre, then made the leap to television in 2007. He has played supporting roles in several Korean dramas such as Three Brothers, Cinderella's Sister, Three Sisters, You Don't Know Women, and The Moon and Stars for You. Go has also appeared in 13 seasons of cable sitcom Rude Miss Young-ae. In 2013, he was cast in his first onscreen leading role in the daily melodrama Crazy Love.