Masiakasaurus ("vicious lizard") is a genus of theropod dinosaur from the Late Cretaceous period of Madagascar. It is famed for the protruding teeth in its mouth, which some paleontologists have theorized it used to catch fish. Its name comes from "Masiaka", a word which means "vicious" in Malagasy. It's scientific name, M. knopfleri comes from Mark Knopfler, a musician whose music inspired the discoverers of the species.

In The Land Before Time

A Masiakasaurus briefly appears as a racing opponent in the game The Land Before Time: Big Water Adventure.