"Uptown Funk" (stylised as "UpTown Funk!") is a song recorded by British record producer Mark Ronson and American singer and songwriter Bruno Mars, for Ronson's fourth studio album, Uptown Special (2015). RCA Records released the song as the album's lead single on 10 November 2014.Jeff Bhasker assisted the artists in co-writing and co-producing the track, with additional writing from Philip Lawrence. This is Mars' fourth collaboration with Ronson (following Mars' own songs "Locked Out of Heaven", "Moonshine", and "Gorilla") and sixth with Bhasker (after "Talking to the Moon", "Young Girls" and the three previously mentioned songs).

The song went through many different incarnations, and was worked on for months. Ronson and Mars recorded it at multiple different locations worldwide, ranging from recording studios to dressing rooms. American bands Sharon Jones & The Dap-Kings and Antibalas perform horn parts on the song, while the song's lyrics interpolate a line from rapper Trinidad James' song "All Gold Everything" (2012). Several music critics noted its similarity with popular music from the 1980s. The song features heavy inspiration from the Minneapolis sound of 1980s-era funk music, having a spirit akin to works by Prince as well as Morris Day and The Time. Copyright controversies arose after the song's release, with multiple lawsuits and amendments to its songwriting credits.

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