Harold Livingston was an American novelist and screenwriter.

Livingston was best known as the credited screenwriter for Star Trek: The Motion Picture (1979). He also wrote for the television series Mission: Impossible and Mannix.

Livingston wrote for several other TV series across the '60s, '70s and '80s, such as Blue Light, Run for Your Life, Iron Horse, The Hell With Heroes, The Name of the Game, The Magician, The Six Million Dollar Man, Barbary Coast, The Fantastic Journey, Fantasy Island, Future Cop and more.

Livingston died April 28, 2022, in Westlake Village, California. He was 97.