Monster on the Campus (a.k.a. Monster in the Night and Stranger on the Campus) is a 1958 American black-and-white science fiction/horror film from Universal-International, produced by Joseph Gershenson, directed by Jack Arnold, from a script by David Duncan, that stars Arthur Franz, Joanna Cook Moore, Nancy Walters, Troy Donahue, and Whit Bissell. The film was theatrically released as a double feature with the British horror film Blood of the Vampire.

The film's storyline tells 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 primitive caveman.