"Peacekeeper" is a song by Fleetwood Mac, written by guitarist and vocalist Lindsey Buckingham, from their 17th studio album, Say You Will (2003).

An early mix of "Peacekeeper" was included on limited edition CD distributed at the ACLU Bill of Rights Dinner on 14 December 2000.

[4] During the recording process, Buckingham ran some of his vocals through an amplifier with distortion and applied EQ to accentuate the mid-range frequencies and eliminate the low end.

[7] In an interview with the Miami Herald, Buckingham characterised "Peacekeeper" as a peace song that explored the interplay between institutions and individuals, including those who are unaffected and unmoved by global crises.

[16] Rolling Stone wrote that a song like "Peacekeeper" demonstrated that the band's "singular vibe – a sunny, countrified lope against which urgent breakup lyrics blaze - has always been [Buckingham's] doing".

[17] Chuck Taylor of Billboard labelled the song as "vintage-quality Mac, familiar in its style and structure, and yet fresh and spirited enough to maintain appeal after countless spins."

[21] "Peacekeeper" was one of the songs performed on Sound Stage Presents – Lindsey Buckingham with Special Guest Stevie Nicks, which aired in 2005 on PBS.