Edmund Hall North (March 12, 1911 – August 28, 1990) was an American screenwriter who shared an Oscar for Best Original Screenplay with Francis Ford Coppola in 1970 for their script for Patton. North wrote the screenplay for the 1951 science-fiction classic The Day the Earth Stood Still and is credited with creating the famous line from the film, "Klaatu barada nikto". North was a president of the screen branch of the Writers Guild of America in which he served on more than 40 committees, including the contract-bargaining panel.