"What Is Life" is a song by English rock musician George Harrison from his 1970 triple album All Things Must Pass. In many countries, it was issued as the second single from the album, in February 1971, becoming a top-ten hit in the United States, Canada and elsewhere, and topping singles charts in Australia and Switzerland. In the United Kingdom, "What Is Life" appeared as the B-side to "My Sweet Lord", which was the best-selling single there of 1971. Harrison's backing musicians on the song include Eric Clapton and the entire Delaney & Bonnie and Friends band, with whom he had toured during the final months of the Beatles. Harrison co-produced the recording with Phil Spector, whose Wall of Sound production also employed a prominent string arrangement by John Barham and multiple acoustic rhythm guitars, played by Harrison's fellow Apple Records signings Badfinger.

George Harrison was an English musician, singer and songwriter who achieved international fame as the lead guitarist of the Beatles. Sometimes called "the quiet Beatle", Harrison embraced Indian culture and helped broaden the scope of popular music through his incorporation of Indian instrumentation and Hindu-aligned spirituality in the Beatles' work. Although the majority of the band's songs were written by John Lennon and Paul McCartney, most Beatles albums from 1965 onwards contained at least two Harrison compositions. His songs for the group include "Taxman", "Within You Without You", "While My Guitar Gently Weeps", "Here Comes the Sun" and "Something". Harrison's earliest musical influences included George Formby and Django Reinhardt; subsequent influences were Carl Perkins, Chet Atkins and Chuck Berry.