Murray Seafield St George Head (born 5 March 1946) is an English actor and singer. Head has appeared in a number of films, including a starring role as the character Bob Elkin in the Oscar-nominated 1971 film Sunday Bloody Sunday. As a musician, he is most recognised for his international hit songs "Superstar" (from the 1970 rock opera Jesus Christ Superstar) and "One Night in Bangkok" (the 1984 single from the musical Chess, which topped the charts in various countries), and for his 1975 album Say It Ain't So. He has been involved in several projects since the 1960s and continues to record music, perform concerts, and make appearances on television either as himself or as a character actor.

Head was born in London to Seafield Laurence Stewart Murray Head (20 August 1919 – 22 March 2009) and Helen Shingler (29 August 1919 − 8 October 2019). Head's father was a documentary filmmaker for Verity Films. Head's mother played Mme Maigret alongside Rupert Davies in the BBC 1960s television adaptation of the Maigret novels written by Georges Simenon. Head's younger brother Anthony Head is also an actor, best known for playing Rupert Giles in the TV series Buffy the Vampire Slayer.