Oliver Muirhead (born 29 May 1957) is an English character actor, known for often portraying pompous country gentlemen. In 1986, he also directed the musical pantomime A Christmas Held Captive. In addition to acting, Muirhead has also lent his voice to various animated series such as P.J. Sparkles and Spider-Man: The Animated Series and the video games Zork: Grand Inquisitor, Dead to Rights, The Hobbit and Eragon.

He is known in the United States for his appearances in 1990s commercials for Tombstone Pizza. He also had a memorable cameo as a sarcastic jeweller in the Friends episode "The One with the Ring".

In 1991, he starred in the soap opera Santa Barbara as Mr. Marx: he hired Gina at the Santa Barbara Sperm Bank.