Labidosaurus is an extinct genus of anapsid reptile from the Permian period of North America. Fossils have been discovered in Texas. It was heavily built, resembling a lizard with a large head, and measuring about 75 centimetres (30 in) long. Unlike many other captorhinids it had a single row of sharp, conical teeth in its jaws, and its dietary habits are assumed to have been omnivorous.