Rainbow is a British rock band formed by Deep Purple founder and former guitarist Ritchie Blackmore in 1975. In addition to Blackmore, the band originally consisted of former Elf lead singer Ronnie James Dio, bassist Craig Gruber, drummer Gary Driscoll, and keyboardist Micky Lee Soule. Over the years, Rainbow went through many lineup changes. including bringing in other vocalists Graham Bonnet and Joe Lynn Turner, before it folded in 1999.

The name of the band was inspired by the Rainbow Bar and Grill