David Duncan (February 17, 1913 – December 26, 1999) was an American screenwriter and novelist.
[1] He began writing professionally at the age of 33 after about ten years in government.
Duncan is remembered for his work in science fiction such as the films Monster on the Campus (1958), The Time Machine (1960) and Fantastic Voyage (1966).
He also wrote for many television series such as National Velvet (1960), The Outer Limits ("The Human Factor", 1963), and Daniel Boone (1964-70).
His science fiction novels include Dark Dominion (1954), Beyond Eden (1955), and Occam's Razor (1957).