Backbeat is a 1994 independent drama film directed by Iain Softley. It chronicles the early days of The Beatles in Hamburg, West Germany. The film focuses primarily on the relationship between Stuart Sutcliffe and John Lennon, and also with Sutcliffe's German girlfriend Astrid Kirchherr. It has subsequently been made into a stage production.

Stuart Fergusson Victor Sutcliffe was a British painter and musician best known as the original bass guitarist of the Beatles. Sutcliffe left the band to pursue his career as a painter, having previously attended the Liverpool College of Art. Sutcliffe and John Lennon are credited with inventing the name "Beetles" (sic), as they both liked Buddy Holly's band, the Crickets. They also had a fascination with group names with double meanings, so Lennon then came up with "The Beatles", from the word beat. As a member of the group when it was a five-piece band, Sutcliffe is one of several who are sometimes referred to as the "Fifth Beatle".