Malcolm Jameson (December 21, 1891 – April 16, 1945) was an American science fiction author. An officer in the US Navy, he was active in American pulp magazines during the Golden Age of Science Fiction. His story "Doubled and Redoubled" may be the earliest work of fiction to feature a time loop. His stories of Solar System exploration about "Bullard of the Space Patrol" were posthumously collected in 1951 as a fixup novel and won the Boys Clubs of America Award.
His novella "Blind Alley", first published in the June, 1943 issue of Unknown, was the basis for the 1963 Twilight Zone episode "Of Late I Think of Cliffordville" starring Albert Salmi, John Anderson, and Julie Newmar. The hour-long fourth season episode was broadcast on April 11, 1963. The story was reprinted in The Twilight Zone: The Original Stories, edited by Martin H. Greenberg, Richard Matheson, and Charles G. Waugh, Avon, 1985, and in Unknown Worlds, edited by Stanley Schmidt and Martin H. Greenberg, Galahad Books, 1988.