Alexander Crichlow Barker Jr. was an American actor. He played Tarzan for RKO Pictures between 1949 and 1953 and later worked in Europe, where he portrayed leading characters from Karl May's novels including Old Shatterhand in a film series by the West German studio Rialto Film. At the height of his fame, he was one of the most popular actors in German-speaking cinema and received Bambi Award and Bravo Otto nominations for the honor.