Johnny Weissmüller Johnny Duval Virginia Grey Janet Hilton Buster Crabbe Mike Kalavich Carol Thurston Toni Rousseau Pedro de Cordoba Tim Rousseau Marcelle Corday Grandmere Rousseau William Edmunds Emile Ledoux Edwin Maxwell Capt. Pierre Moise Pierre Watkin P.T. Hilton Charles Gordon Capt. Hal Peyton Frank Fenton Capt. Pete Dailey Libby Taylor Hilton's Maid (uncredited) William H. Pine Director Harold E. Knox Director Fred Jackman Jr. Director