The Great Alligator River, originally Il fiume del grande caimano and also known as Alligators, Caiman, Big Alligator River and The Big Caimano River, is a 1979 Italian adventure film directed by Sergio Martino. In the film, an African God takes the form of a giant man-eating crocodile and attacks tourists at a newly built resort after it becomes angered by encroachment on its land.
Filming took place during the summer of 1979 in Sri Lanka and Italy, and began on 3 June; filming was originally slated to start on 20 May.
It was one of several Italian exploitation films Richard Johnson made in the 1970s.