John Steiner (born 7 January 1941 in Chester, Cheshire) is an English actor. Tall, thin and gaunt, Steiner attended the Royal Academy of Dramatic Arts and worked for a few years at the BBC. Steiner featured in a lead role in a television production of Design for Living by Noël Coward. Later he found further work primarily in films. In the late 1960s, Steiner was hired to play a part in the spaghetti western Tepepa. He found himself in demand in Italy and moved there, specialising in playing villains in a great number of Italian B-films and exploitation films. John Steiner has appeared in various genres of films, including horror films and police actioners. He also became a favourite of famed Italian filmmaker Tinto Brass featuring in Salon Kitty alongside Ingrid Thulin and Helmut Berger, and in Caligula.
Steiner was in very steady demand until the late 1980s. As the Italian film industry dwindled, Steiner retired from acting in 1991 and moved to California, where he became an estate agent.
Steiner has recently contributed to DVD extras on some of his films and given interviews about his Italian work.