Ahn Nae-sang (; born December 25, 1964) is a South Korean actor. He began his career on the stage, and in 1994 made his film debut in the Bong Joon-ho short film Baeksekin ("White Man" or "White-collar worker"), followed by Jang Sun-woo's Bad Movie in 1997. He has since starred in numerous films, with supporting roles in Lee Chang-dong's Oasis and Poetry, and a leading role in Hoichori ("Cane"). He also appears in television series, notably Conspiracy in the Court, First Wives' Club, Three Brothers, ', and The Light in Your Eyes.