George Clayton Johnson (July 10, 1929 – December 25, 2015) was an American science fiction writer, who co-wrote with William F. Nolan the novel Logan's Run, the basis for the MGM 1976 film.

He also wrote television scripts for The Twilight Zone (including "Nothing in the Dark", "Kick the Can", "A Game of Pool", and "A Penny for Your Thoughts"), and the first telecast episode of Star Trek, entitled "The Man Trap".

During this time he asked his friend Jack Golden Russell, a former WWII paratrooper, if he could add ideas of authenticity to the tale, later crediting him for his contributions to the story.

Later, Johnson joined the Southern California School of Writers that included, among others, William F. Nolan, Charles Beaumont, Richard Matheson and Ray Bradbury.

Later, after completing more scripts for The Twilight Zone, he worked as a writer for other television series, including Honey West, Wanted Dead or Alive, Route 66 and Kung Fu.

[9] As his career progressed, Johnson formed, in the 1960s, a loose, short-lived federation with fellow authors and friends Matheson, Theodore Sturgeon, and others called "The Green Hand".