John Mayall & the Bluesbreakers are an English blues rock band led by multi-instrumentalist, singer and songwriter John Mayall. The band has been influential as an incubator for British rock and blues musicians. Many of the best known bands to come out of Britain in the 1960s and 1970s had members that came through the Bluesbreakers at one time, forming the foundation of British blues music that is still played heavily on classic rock radio. Among those with a tenure in the Bluesbreakers are Eric Clapton and Jack Bruce, Peter Green, Mick Fleetwood, and John McVie, Mick Taylor, Aynsley Dunbar, Jon Hiseman, Dick Heckstall-Smith and Tony Reeves, and numerous others.

John Mayall is an English blues and rock musician, songwriter and producer. In the 1960s, he formed John Mayall & the Bluesbreakers, a band that has counted among its members some of the most famous blues and blues rock musicians.