John Murphy (born 4 March 1965) is an English film composer. He is a self-taught multi-instrumental musician who began his career in the 1980s working notably with The Lotus Eaters, Thomas Lang, Gary Wall and Claudia Brücken. Since the beginning of his career he has collaborated numerous times with several directors, mainly Vadim Jean and Danny Boyle. He has received praise through the years and some of his awards include the Silver Award (1st Prize) at the Cannes Film Festival, a British D&AD Award, and a BMI Award.

Murphy gained recognition in the film industry while working with Guy Ritchie in his film Lock, Stock and Two Smoking Barrels, Michael Mann's Miami Vice, Matthew Vaughn's Kick-Ass and scoring various films by Danny Boyle. His instrumental tracks "In the House – In a Heartbeat" and "Adagio in D Minor" have been featured in a variety of TV shows, commercials and film trailers.