Until 1990, what was the only Western to have been awarded the Oscar for best Picture? August 17, 2017 By Show answer Cimarron, in 1931. It would be nearly 60 years before another western-themed movie, Dances with Wolves would win, ln 1990. two years later Clint Eastwood’s brooding Western, The Unforgiven, would also claim the award More Entertainment QuestionsMore Movies Questions