Mark Edward Kozelek is an American singer, songwriter, guitarist, record producer and occasional actor. He is known as the vocalist and primary recording artist of the indie folk act Sun Kil Moon and founding member of the indie rock band Red House Painters, with whom he recorded six studio albums from 1988 until 2001.

Sun Kil Moon is an American folk rock act from San Francisco, California, founded in 2002. Initially a continuation of the defunct indie rock band Red House Painters, Sun Kil Moon is now the primary recording moniker of vocalist and guitarist Mark Kozelek. The project is named after the Korean super flyweight boxer Sung-Kil Moon.