Mokèlé-mbèmbé is said to be a dinosaurlike creature living in and around the Congo River basin. The name originates in the Lingala language, and translates roughly as "one who stops the flow of rivers." Some scientists and believers suspect the being is a sauropod that managed to avoid extinction while others, notably pygmy inhabitants of the area, think the creature is somehow magical.

The earliest recorded sighting of Mokèlé-mbèmbé was in 1776, but the majority of the eyewitness reports occurred during the 20th century. It has inspired many works of fiction, including a book by James Blish and the Disney movie Baby: Secret of the Lost Legend.