"Everglow" is a song by British rock band Coldplay. It is the fourth track, promotional single and fifth single proper from their seventh studio album, A Head Full of Dreams. The song features uncredited guest vocals by Gwyneth Paltrow, the ex-wife of Chris Martin. The song was served as a promotional single of the album and released on 26 November 2015. The track was also premiered during Zane Lowe's Beats 1 radio show. On 11 November 2016 it was released digitally as the fifth single proper from the album, in a newly-recorded stripped-down version that was inspired by Martin's unrehearsed solo performance of the song at the recent Glastonbury Festival due to a technical mishap. The version ended with a sample of Muhammad Ali's 1977 speech in Newcastle upon Tyne.

Martin came up with the idea for the title of the song from a slang word he heard from a surfer. In an interview with Zane Lowe, he explained the origin of the phrase: "I was in the ocean one day with this surfer guy, who spoke just like you'd imagine a surfer guy to speak … This guy spoke like Sean Penn's character from Fast Times at Ridgemont High. He was like, 'Yo dude, I was doing this thing the other day man, it gave me this total everglow!'"

"Everglow" revolves around a heartfelt piano riff. The track is written in the key of C# Minor at 73 BPM and a chord progression that alternates between C#m-A-E-G#m7 and C#m-A-E-B.

The song was debuted during the iHeartRadio album release party of A Head Full of Dreams, on 19 November 2015.

An initial video directed by Joe Connor was filmed at the Eisstadion am Pferdeturm in Hanover on 30 June 2016, but was unreleased. This video was leaked online in 2017. Another video filmed by Ben Mor, featuring Chris Martin performing the song on a grand piano, was released on 9 December 2016.

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