John DeCuir (June 4, 1918 – October 29, 1991) was a Hollywood art director and production designer known for his elaborate set designs that were illustrated with his own watercolor paintings. DeCuir studied at the Chouinard Art School, joined Universal in the late 1930s, and by the mid-1940s was designing sets. In 1949, he signed with 20th Century Fox where he worked on productions with elaborate sets. These included dramatic material such as The House on Telegraph Hill (1951), musicals including There's No Business Like Show Business 1954), and comedy Ghostbusters (1984). DeCuir earned eleven Oscar nominations, winning three: The King and I (1956), Cleopatra (1963), and Hello, Dolly! (1969). DeCuir designed the short-lived exhibit devoted to horror film at Movieland Wax Museum in Buena Park, CA called The Black Box. His son, John DeCuir Jr. is also a production designer.

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