Marmayogi (English: The Mysterious Sage) is a 1951 Indian Tamil fantasy film directed by K. Ramnoth and produced by M. Somasundaram under his banner Jupiter Studios. A film adaptation of the novel Vengeance by Marie Corelli and William Shakespeare's novel Macbeth, the film was shot simultaneously in Hindi as Ek Tha Raja. The film features M. G. Ramachandran, Madhuri Devi and Anjali Devi in the lead roles with Pandari Bai, M. N. Nambiar and S. V.