Harry Tenbrook was a Norwegian-American film actor.

The Mysterious Island is a 1929 American sound part-talkie science fiction film directed by Lucien Hubbard, based on Jules Verne's 1874 novel L'Île mystérieuse. The film was photographed largely in two-color Technicolor. In addition to sequences with audible dialogue or talking sequences, the film features a synchronized musical score and sound effects along with English intertitles. The sound was recorded via the Western Electric sound-on-film process. The film was released by Metro-Goldwyn-Mayer.