| Named By: | Yakovlev in 1991 |
| Time Period: | Late Cretaceous |
| Location: | Russia. Spain. Sweden |
| Size: | Unavailable |
| Diet: | Piscivore/Carnivore |
| Fossil(s): | Skulls and partial post cranial fossils of several individuals |
| Classification: | | Chordata | Reptilia | Squamata | Mosasauridae | |
Prognathodon ('forejaw tooth') is an extinct genus of mosasaur squamate reptile.