Barry Blue (born Barry Ian Green, 4 December 1950, in London), is a rock singer / producer / songwriter from the United Kingdom. He is best known for his hit songs, "Dancin' (on a Saturday Night)" which he co-wrote with Lynsey De Paul and "Do You Wanna Dance", both from the 1970s.

He signed to Bell Records in the early 1970s and had five hit singles, but by the end of the decade his popularity had declined. His final Top 40 hit in the UK Singles Chart occurred in October 1974, when "Hot Shot", another song co-penned with Lynsey De Paul climbed to Number 23. Although he never matched the commercial heights of his rivals such as The Sweet, Gary Glitter, David Bowie or T Rex, Barry Blue has continued to work in the pop music business, mostly as a producer for other artists, including Heatwave, Bananarama, Toto Coelo and Cheryl Lynn. Blue's compilation album, Greatest Hits was released on Repertoire Records in 2002.

Blue's song "Escaping" has been recorded by Margaret Urlich (1989), Asian Blue (1992) and most commercially successfully by Dina Carroll in 1996.

Barry Blue is also the name of a British rap artist who performed primarily with the group, Gunshot.