John Winston Ono Lennon, MBE (born John Winston Lennon; October 9, 1940 – December 8, 1980) was an English rock musician, singer, songwriter, artist, and peace activist who gained worldwide fame as one of the founding members of The Beatles. As a member of the group, Lennon was one of the lead vocalists and co-wrote many of the band's songs with Paul McCartney.

In his solo career, Lennon wrote and recorded songs such as "Give Peace a Chance" and "Imagine". Lennon revealed his rebellious nature and wit on television, in films such as A Hard Day's Night, in books such as In His Own Write, and in press conferences and interviews. He was controversial through his work as a peace activist, artist, and author.

Lennon had two sons: Julian Lennon, with his first wife Cynthia Lennon, and Sean Ono Lennon, with his second wife, avant-garde artist Yoko Ono. After a self-imposed retirement from 1976 to 1980, Lennon reemerged with a comeback album, but was murdered one month later in New York City on 8 December 1980. In 2002, respondents to a BBC poll on the 100 Greatest Britons voted Lennon into eighth place. In 2004, Rolling Stone magazine ranked Lennon number 38 on its list of "The Immortals: The Fifty Greatest Artists of All Time" and ranked The Beatles at number one.