Tarzan's Hidden Jungle is a 1955 black-and-white film from RKO Pictures directed by Harold D. Schuster and starring Gordon Scott in his first film as Tarzan, taking over the role from Lex Barker, who had in turn followed Johnny Weissmuller in the series. The film about Edgar Rice Burroughs' ape-man also features Vera Miles and Jack Elam. The last of twelve Tarzan pictures released by RKO before the rights returned to MGM and the eighteenth overall film of the Tarzan film series that began with 1932's Tarzan the Ape Man, it was followed by Tarzan and the Lost Safari in 1957.

Tarzan's mate, Jane, does not appear in the film. Tarzan at first seems to show more than casual interest in Miles' character Jill Hardy, but ultimately there is no romance. In real life, Scott and Miles were married after the film was completed. Scott eventually played Tarzan in six movies over a five-year span.