Celebrity Mastermind is a British television quiz show broadcast by BBC television. The show is a spin-off of the long-running quiz show Mastermind, with the exception that all the contestants are celebrities. As with the main show, John Humphrys is the host and question-master. Magnus Magnusson was quizmaster on the 2003/04 episodes featuring Jonathan Meades as winner.

Mastermind is a British quiz show, well known for its challenging questions, intimidating setting and air of seriousness. Devised by Bill Wright, the basic format of Mastermind has never changed — four and in later contests five contestants face two rounds, one on a specialised subject of the contestant's choice, the other a general knowledge round. Wright drew inspiration from his experiences of being interrogated by the Gestapo during World War II. The atmosphere is helped by Mastermind's famously ominous theme music, "Approaching Menace" by the British composer Neil Richardson. The quiz programme originated and was recorded in Manchester at studios such as New Broadcasting House and Granada Studios, before permanently moving to MediaCityUK in 2011.