William Everett Preston (September 2, 1946 – June 6, 2006) was an American musician, whose work encompassed R&B, rock, soul, funk, and gospel. Preston was a top session keyboardist in the 1960s, during which he backed artists such as Little Richard, Sam Cooke, Ray Charles, Everly Brothers, Reverend James Cleveland, The Rolling Stones, and the Beatles. He went on to achieve fame as a solo artist with hit singles such as "That's the Way God Planned It", the Grammy-winning "Outa-Space", "Will It Go Round in Circles", "Space Race", "Nothing from Nothing", and "With You I'm Born Again". Additionally, Preston co-wrote "You Are So Beautiful", which became a #5 hit for Joe Cocker.
Preston was one of only five musicians credited on a Beatles recording other than the group's four members. Preston continued to record and perform with other artists, notably George Harrison after the Beatles' breakup, and Eric Clapton, and he played keyboards for the Rolling Stones on many of the group's albums and tours during the 1970s. On May 12, 2021, the Rock and Roll Hall of Fame announced that Preston would be inducted with the Musical Excellence Award.