Mark Antrim Short (July 11, 1900^{[citation needed]} – November 24, 1972) was an American stage and film actor, casting director and talent agent. As a juvenile he enjoyed some success on the Broadway stage, notably appearing as a boy with Mrs. Fiske and Holbrook Blinn in Salvation Nell by Edward Sheldon in 1908. While in his teens he appeared in silent films playing the kind of roles that were made popular by Jack Pickford.^{[citation needed]}

Short was born to two actors, Lew and Estella Short, and his sister was silent actresses Gertrude Short. They were cousins of Blanche Sweet. Short was married to Frances Morris, who is best remembered by TV fans as George Reeves's Earth mother Sarah Kent in The Adventures of Superman.^{[citation needed]}

Short died in Los Angeles November 24, 1972.