Carnotaurus ( meaning "meat (eating)-bull", referring to its distinct bull-like horns (Latin carne = flesh + Greek tauros = bull) was a large predatory dinosaur, with horns vaguely resembling a bull's. Only one species, Carnotaurus sastrei has been described so far.

Carnotaurus lived in Patagonia, Argentina (La Colonia Formation) during the Maastrichtian stage of the Late Cretaceous, and was discovered by José F. Bonaparte, who has uncovered many other South American dinosaurs

It is known in popular culture for appearances in Jurassic Park:The Lost World (the novel not the film) and as the 'villains' from the 'Dinosaur' dinsney film.