Charles B. Middleton (October 3, 1874 – April 22, 1949) was an American stage and film actor. During a film career that began at age 46 and lasted almost 30 years, Charles Middleton appeared in nearly two hundred films as well as numerous plays. He is perhaps best remembered for his role as the villainous emperor Ming the Merciless in the three Flash Gordon series made between 1936 and 1940.