Donald E. Stewart was an American-born screenwriter, best known for his screenplay for Missing, which won the Academy Award for Writing Adapted Screenplay, the Writers Guild of America Award, the London Film Critics' Circle award, a Christopher Award, and the BAFTA Award for Best Screenplay, all shared with the film's director, Costa-Gavras. The screenplay for Missing is used in film schools for instruction in structure and development. He also wrote or co-wrote the screenplays for the Tom Clancy-trilogy of Jack Ryan films The Hunt for Red October, Patriot Games and Clear and Present Danger.
