"Get Back" is a song recorded by the English rock band The Beatles with Billy Preston, written by Paul McCartney, and credited to the Lennon–McCartney partnership. It was originally released as a single on 11 April 1969 and credited to "The Beatles with Billy Preston", and is one of the few examples of John Lennon featuring prominently as lead guitarist. The album version contains a different mix that features a studio chat between Lennon and McCartney for 20 seconds at the start before the song begins, also omitting the coda featured in the single version, and with a final dialogue taken from the Beatles' rooftop concert. This version became the closing track of Let It Be (1970), which was released just after the group split up. The single version was later issued on the compilation albums 1967–1970, 20 Greatest Hits, Past Masters, and 1.

The single reached number one in the United Kingdom, the United States, Ireland, Canada, New Zealand, the Netherlands, Australia, France, West Germany, Mexico, Norway, Switzerland, Austria, and Belgium. It was the Beatles' only single that credited another artist at their request. "Get Back" was the Beatles' first single release in true stereo in the US. In the UK, the Beatles' singles remained monaural until the following release, "The Ballad of John and Yoko". It was also the only Beatles single to debut on the UK singles chart at number one.