Harold Brent Wallis (born Aaron Blum Wolowicz; October 19, 1898 – October 5, 1986) was an American film producer. He is best remembered for producing "Casablanca" (1942) and "True Grit" (1969), along with many other major films for Warner Bros. featuring such film stars as Humphrey Bogart, Bette Davis, and Errol Flynn.