Montgomery Tully (6 May 1904 – 10 October 1988) was an Irish film director and writer.

Born in Dublin, Tully studied at the University of London, and originally entered the film industry as a director of documentaries. Later, Tully worked on low-budget British films, and is mostly known for his crime dramas. One of his films, No Road Back (1957), featured Sean Connery in a very early role. His last film, The Terrornauts, was made in 1967. He also worked in television, directing episodes of shows including Edgar Wallace Mysteries, Kraft Mystery Theatre, Man from Interpol and Fabian of the Yard.