"Angels" is a song co-written by musicians Robbie Williams, Ray Heffernan, and Guy Chambers. Williams and Chambers were subsequently credited as "joint co-writers" and the song was released as a single in December 1997. It became Williams' biggest selling single and was voted the best song of the past 25 years at the 2005 Brit Awards.

"Angels" has since been covered by many artists, including Jessica Simpson; Beverley Knight; All Angels; Declan Galbraith; Verena von Strenge's latest group, Moon Dust; and American Idol series 7 runner-up David Archuleta. It has been recorded in Spanish (as "Ángel") by Mexican singers Yuridia and Marco Moré, and in Italian (as "Un Angelo") by Patrizio Buanne. In 2009, Williams performed "Angels" at the final of the sixth series of The X Factor with Olly Murs. Williams also recorded a Spanish version of the song. In a 2005 poll, "Angels" was ranked the most popular song that Britons would most like played at their funeral.

"Angels" was the fourth single from Williams' debut album, Life thru a Lens. It has been credited with saving the singer's floundering solo career, and is used to conclude almost all of his concerts. The song was the 38th best selling of 1997 in the UK, and the 26th of 1998. It was the 34th best selling single of the decade. Despite only reaching a peak of No. 4, it is Williams' biggest-selling UK single and according to Official UK Charts Company figures passed the million sales mark in June 2009, with a combination of both physical and download sales. It has sold 1.2 million copies in the UK as of November 2012. It was released in 1999 in the US, after Williams' debut there with "Millennium". A video for the song was released in the US featuring Williams atop a roof, watching the city below.

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