The Hour of 13 is a 1952 British historical mystery film directed by Harold French and starring Peter Lawford, Dawn Addams and Roland Culver. It was made at Elstree Studios by the British subsidiary of MGM. The film's sets were designed by the German-born art director Alfred Junge. Some location shooting took place around London including Kensington Gardens. The film is a remake of the 1934 thriller The Mystery of Mr. X.