Not as a Stranger is a 1955 American film noir drama film produced and directed by Stanley Kramer, starring Olivia de Havilland, Robert Mitchum, Frank Sinatra and Gloria Grahame. It is based on the 1954 novel of the same name by Morton Thompson, which topped that year's list of bestselling novels in the United States. The film's supporting cast features Broderick Crawford, Charles Bickford, Lon Chaney Jr., Lee Marvin, Harry Morgan and Mae Clarke.

Stanley Earl Kramer was an American film director and producer, responsible for making many of Hollywood's most famous "message films" and a liberal movie icon. As an independent producer and director, he brought attention to topical social issues that most studios avoided. Among the subjects covered in his films were racism, nuclear war, greed, creationism vs. evolution, and the causes and effects of fascism. His other films included High Noon, The Caine Mutiny, and Ship of Fools (1965).