William Orbit (William Mark Wainwright) is a British musician and record producer, best known to the public for producing music with Madonna, U2, Blur, Britney Spears and more.

His speciality is atmospheric keyboard electronica although much of his work features accomplished guitar playing. He has also recorded several largely instrumental solo albums under the name Strange Cargo which features vocals by Beth Orton, Laurie Mayer, Joe Frank among others. He was the musical force behind Bassomatic in the early 1990s, and formed the band Torch Song together with Mayer and Rico Conning in the 1980s. Orbit's remixes carry his signature electronic sounds and techniques, making them sought after by fans of his solo work.