- John Lennon: Vocals, guitars, harmonica; leader of the band and primary songwriter with McCartney
- Paul McCartney: Vocals, bass guitar, keyboards, guitars; leader of the band and primary songwriter with Lennon
- George Harrison: Lead guitar, sitar, vocals
- Ringo Starr: Drums, congas, percussion, vocals
Additional musicians who contributed to the Beatles' recordings and tours at various times included Billy Preston, George Martin, Eric Clapton, and Klaus Voormann. After the Beatles disbanded in 1970, each member went on to successful solo careers.