William LeBaron was an American film producer.
LeBaron's film credits included Cimarron, which won the Academy Award for Outstanding Production at the 4th Academy Awards ceremony for 1930/1931. LeBaron also produced landmark comedy features from W. C. Fields, Mae West and Wheeler and Woolsey. In addition to being a producer, LeBaron served as the last production chief of Film Booking Offices of America and at FBO's successor, RKO Pictures, where he was replaced by David O. Selznick. LeBaron was married to Mabel Hollins, a British musical comedy actress. He is buried in Chapel of the Pines Crematory.