Philippe Louis Henri Marie de Chérisey, 9th marquess de Chérisey (13 February 1923 – 17 July 1985) was a French writer, radio humorist, surrealist and supporting actor (using the stage name Amédée).

He is best known for his creation of fake parchments published in the 1967 book L'Or de Rennes by Gérard de Sède, as part of his involvement in the Priory of Sion hoax between 1962-1983.

Coming from a wealthy family in the Lorraine, de Chérisey decided to become an actor against his family's wishes. He enrolled in the René Simon drama school in 1946 where he started his actor's training, and his most notable film appearance was in Jeux interdits in 1952. He was known as a bon viveur, regularly enjoyed wine and frequented public libraries where his natural curiosity made him follow up anything that took his fancy.

Philippe de Chérisey was a follower of the surrealist movement. He claimed acquaintance with Eugene Ionesco and was like him a member of the College of Pataphysics, although - like his membership of Oulipo - there is no evidence that he was actively involved. His desire to subvert the norms of culture, or in other words, create an alternate reality that became more real than reality itself, was done within the context of the Priory of Sion and to promote the claim that Pierre Plantard was the direct descendant of Dagobert II. He considered himself a satirist from his days in French radio, and continued this persona within the theme of the Priory of Sion calling himself a prankster. The best known example of this is his esoteric novella Circuit (originally written in 1968, but not actually deposited within the Bibliothèque nationale de France until 1971).