"The Boxer" is a song written by Paul Simon and recorded by the American music duo Simon & Garfunkel from their fifth and final studio album, Bridge over Troubled Water (1970). Produced by the duo and Roy Halee, it was released as a standalone single on March 21, 1969, but included on the album nine months later. The song is a folk rock ballad that variously takes the form of a first-person lament as well as a third-person sketch of a boxer. The lyrics are largely autobiographical and partially inspired by the Bible and were written during a time when Simon felt he was being unfairly criticized. The song's lyrics discuss poverty and loneliness. It is particularly known for its plaintive refrain, in which they sing 'lie-la-lie', accompanied by a heavily reverbed snare drum.

Paul Frederic Simon is an American singer-songwriter known both for his solo work and his collaboration with Art Garfunkel. He and his school friend Garfunkel, whom he met in 1953, came to prominence in the 1960s as Simon & Garfunkel. Their blend of folk and rock, including hits such as "The Sound of Silence", "Mrs. Robinson", "America" and "The Boxer", served as a soundtrack to the counterculture movement. Their final album, Bridge Over Troubled Water (1970), is among the bestselling of all time.