Stephen Barry Singleton (born 17 April 1959) is an English musician, currently residing in Sheffield, England. According to an interview Singleton did for the documentary Made in Sheffield, he was friends with Def Leppard lead singer Joe Elliott when the two were young children. Along with Mark White and David Sydenham, he founded the band Vice Versa in 1977. He also produced several issues of Steve's Papers, a Sheffield punk fanzine. He is probably most notable, however, for being the saxophonist in the popular new wave band ABC (which he left in 1984), and for starring in the 1983 short film Mantrap.
In the early 1990s Singleton was a member of the band Bleep & Booster, who released an album on London Records and produced some remixes for East 17. Singleton also produced records by the Screaming Trees (featuring a young Richard Hawley) and Libitina.
In 2015, Stephen Singleton and Mark White reformed Vice Versa.