Reiszorhinus is an extinct genus of captorhinid tetrapods known from the Early Permian of the United States.

It is distinguishable by its recurved teeth and extremely large Meckelian foramen on the inner surface of the lower jaw.

It has been considered a primitive member of its family because it has a single tooth along the margins of the jaws.

However, Reiszorhinus differs from other large captorhinids in that the cheek region is not wide and expanded.

Specimens belonging to the species were previously misidentified as those of the similar captorhinid Labidosaurus hamatus.