Octaman is a 1971 Mexican-American monster film written and directed by Harry Essex, with the costume design by future Academy Award winner Rick Baker. It follows an expedition team that becomes the target of a murderous humanoid octopus. The film received negative reviews from critics upon its release but has since developed a cult following.

On Thursday April 18, 2019, the film was shown theatrically in the United States as part of the Rifftrax Live comedy series and then shown in an encore presentation on Wednesday, April 24, 2019.