"Uptown Funk" is a song by British record producer Mark Ronson and featuring American singer Bruno Mars. It was released on 10 November 2014, as the lead single from Ronson's fourth studio album, Uptown Special (2015). "Uptown Funk" was written by Ronson, Mars, Jeff Bhasker, and Philip Lawrence; it was produced by the aforementioned first three. The song began during a freestyle studio session while they worked on a jam Mars and his band had been playing on tour. Copyright controversies arose after the song's release resulting in multiple lawsuits and amendments to its songwriting credits.

Mark Daniel Ronson is a British-born musician and DJ based in the United States. He has won eight Grammy Awards, including Producer of the Year for Amy Winehouse's album Back to Black (2006), as well as two for Record of the Year with her 2006 single "Rehab" and his own 2014 single "Uptown Funk". He has also won an Academy Award for Best Original Song, a Golden Globe and a Grammy Award for co-writing "Shallow" for the film A Star Is Born (2018). Ronson served as lead and executive producer for the soundtrack to the 2023 fantasy comedy film Barbie, on which he also composed and co-wrote several of its songs with his production partner Andrew Wyatt. The soundtrack won three Grammy Awards—"What Was I Made For?" won Song of the Year and Best Song Written for Visual Media, while the parent album won Best Compilation Soundtrack for Visual Media—from 11 nominations, as well as an Academy Award for Best Original Song from two nominations.