"Voodoo Ray" is the debut single by British electronic musician Gerald Simpson, recording under the name A Guy Called Gerald. The single was released in the UK in 1988 on the 7" and 12" vinyl formats, on the Rham! label. A version of the track appeared on A Guy Called Gerald's 1988 album Hot Lemonade, and the original single was later released in the United States in 1989 by Warlock Records.

Gerald Rydel Simpson, better known as A Guy Called Gerald, is a British record producer and musician. He was an early member of the electronic group 808 State, contributing to their debut LP Newbuild (1988) and hit single "Pacific State" (1989). He also achieved solo success with his 1988 hit single "Voodoo Ray", which became a touchstone of Manchester's acid house scene and reached No. 12 in the UK charts. He embraced breakbeat production in the 1990s, with his 1995 album Black Secret Technology becoming a "much-touted candidate for 'best jungle album ever.'" He also ran the London-based independent record label Juice Box Records from 1991 to 1998.