Cimarron is a 1931 Pre-Code Western film directed by Wesley Ruggles, starring Richard Dix and Irene Dunne, and featuring Estelle Taylor and Roscoe Ates. The Oscar winning script was written by Howard Estabrook based on the Edna Ferber novel Cimarron. It would be RKO's most expensive production up to that date, and its winning of the top Oscar for Best Production would be only one of two ever won by that studio. It is also one of the few Westerns to ever win the top honor at the Academy Awards. Epic in scope, spanning forty years from 1889 to 1929, it was a critical success, although it did not recoup its production costs during its initial run in 1931.