Monster on the Campus (Monster in the Night and Stranger on the Campus) is a 1958 American science fiction/horror film, released by Universal-International. It was directed by Jack Arnold, from a script by David Duncan. It was theatrically released in 1958 on a double bill with the British Blood of the Vampire. The films tells the story of a university science professor who accidentally comes into contact with the irradiated blood of a coelacanth, which causes him to "regress" to being a caveman.
The film was the last of Universal's science fiction monster films released before Island of Terror (1966).