Drexel Jerome Lewis Bixby (January 11, 1923 – April 28, 1998) was an American short story writer and scriptwriter.

Bixby's final produced or published work so far was the screenplay for the 2007 science fiction film The Man from Earth.

Bixby conceived and co-wrote the story for the 1966 film Fantastic Voyage,[3][4][5][6] Bantam Books obtained the rights for a paperback novelization based on the screenplay and approached Isaac Asimov to write it.

In 2007, it was made into an independent motion picture, with his son Emerson Bixby as executive producer, directed by Richard Schenkman, and starring David Lee Smith, William Katt, Richard Riehle, Tony Todd, Annika Peterson, Alexis Thorpe, Ellen Crawford, and John Billingsley.

The Star Trek: Deep Space Nine seventh-season Mirror Universe episode, "The Emperor's New Cloak" (1999), is dedicated to Bixby's memory.