A Hard Day's Night is the third studio album by the English rock band the Beatles, released on 10 July 1964 by Parlophone, with side one containing songs from the soundtrack to their film of the same name. The American version of the album was released two weeks earlier, on 26 June 1964 by United Artists Records, with a different track listing. In contrast to the Beatles' first two albums, all 13 tracks on A Hard Day's Night were written by John Lennon and Paul McCartney, showcasing the development of their songwriting partnership.

The album includes the song "A Hard Day's Night", with its distinctive opening chord, and "Can't Buy Me Love", both transatlantic number-one singles for the band. Several of the songs feature George Harrison playing a Rickenbacker 12-string electric guitar, a sound that was influential on the Byrds and other groups in the folk rock movement.