| Named By: | GorjanovicinKramberger in 1892 |
| Time Period: | 100 Ma Late Cretaceous |
| Location: | Croatia and Lebanon |
| Size: | 1 meter long |
| Diet: | Piscivore/Carnivore |
| Fossil(s): | At least 2 individuals |
| Classification: | | Chordata | Reptilia | Squamata | Anguimorpha | Pythonomorpha | |
Pontosaurus is a now extinct genus of pythonomorph from the Late Cretaceous period. It was originally named Hydrosaurus, but that name was preoccupied by an agamid lizard, so it was renamed.