The Quarrymen (also written as "the Quarry Men") are a British skiffle/rock and roll group, formed by John Lennon in Liverpool in 1956, which eventually evolved into the Beatles in 1960. Originally consisting of Lennon and several schoolfriends, the Quarrymen took their name from a line in the school song of Quarry Bank High School, which they attended. Lennon's mother, Julia Lennon, taught her son to play the banjo and then showed Lennon and Eric Griffiths how to tune their guitars in a similar way to the banjo, and taught them simple chords and songs.

Lennon started a skiffle group that was very briefly called the Blackjacks, but changed the name before any public performances. Some accounts credit Lennon with choosing the new name; other accounts credit his close friend Pete Shotton with suggesting the name. The Quarrymen played at parties, school dances, cinemas and amateur skiffle contests before Paul McCartney joined the band in October 1957. George Harrison joined the band in early 1958 at McCartney's recommendation, though Lennon initially resisted because he felt Harrison (still only 14 when he was first introduced to Lennon) to be too young. Both McCartney and Harrison attended the Liverpool Institute.