Sumner Murray Redstone (born Sumner Murray Rothstein; May 27, 1923 – August 11, 2020) was an American businessman and media magnate. He was the majority owner and chairman of the board of the National Amusements theater chain. Redstone and his family are majority owners of CBS Corporation and Viacom (itself the parent company of Viacom Media Networks, BET Networks, and the movie studio Paramount Pictures).