Tarzan and the Green Goddess

While this movie was released in 1938, it was made by editing together The New Adventures of Tarzan, a serial from 1935.  The title character is played by Herman Brix, a silver medalist in the 1928 Olympics.  This continued a tradition of Olympian Tarzans: both Johnny Weissmuller and Buster Crabbe were gold medal swimmers (Brix was a shotputter).  This movie has the distinction of being the only early Tarzan film to portray Tarzan not just as the "King of the Jungle" but also as the cultured Lord Greystoke.