William Orbit (born William Mark Wainwright, 15 December 1956) is an English musician, composer and record producer. In the early 1980s he formed synthpop act Torch Song with Laurie Mayer and Grant Gilbert. In 1987 he released the first of his Strange Cargo album series, containing ambient music.

Towards the end of the 1990s Orbit started to work with bigger name artists, producing songs on Ray of Light and Music by Madonna, 13 and Think Tank by Blur and Saints and Sinners by All Saints. His work with Madonna led him to win three Grammys. He worked again with Madonna on her 2012 album MDNA producing six songs.