Alphonse Ethier (December 10, 1874 – January 4, 1943) was an American film actor. He appeared in more than 70 films between 1910 and 1939. His first name was sometimes spelled Alphonz. Ethier acted on stage before he began making films with the Thanhouser Company. His film debut came in Thelma (1910). Ethier was married to the former Catherine Falloway, a "prima donna of light opera and musical comedy".