Simon of the Desert (Spanish: Simón del desierto) is a 1965 Mexican surrealist film directed by Luis Buñuel and starring Claudio Brook and Silvia Pinal. It is loosely based on the story of the ascetic 5th-century Syrian saint Simeon Stylites, who lived for 39 years on top of a pillar. The screenplay was co-written by Buñuel and his frequent collaborator Julio Alejandro.

Following Viridiana (1961) and The Exterminating Angel (1962), Simon of the Desert was the third, and last, of Buñuel's films to star Pinal and be produced by Gustavo Alatriste, Pinal's husband at the time. It was also the final film of Buñuel's Mexican period before he returned to Europe. Today, it is generally acclaimed by film critics, who consider it to be one of the director's most demonstrative works.