Inosaurus (meaning "In Tedreft lizard") is the name given to a dubious genus of theropod dinosaur from the Early Cretaceous-aged "Continental intercalaire" and Early Cretaceous (Albian)-aged Echkar Formation of Niger and possibly from the Late Cretaceous (Cenomanian)-aged Baharija Formation of Egypt The type, and only species, is Inosaurus tedreftensis.

De Lapparent based the species on a set of remains found in a single location, a number of vertebrae and the top end of a left tibia.

He also indicated four other specimens, all vertebrae found in Niger in the Tegama Group, early Albian, as paratypes.

Despite being from a small animal they are robustly built and very high with enlarged chevron facets and a median groove on the underside.

Inosaurus is today considered a nomen dubium because of the fragmentary nature of the fossils discovered.