| Named By: | T. L. Adams in 2014 |
| Time Period: | Early Cretaceous, 112 Ma |
| Location: | USA, Texas - Antlers Formation, Twin Mountains Formation |
| Size: | Skulls up to 6.4 centimetres long |
| Diet: | Carnivore/Piscivore |
| Fossil(s): | Partial skulls and partial post cranial skeletal remains |
| Classification: | | Chordata | Reptilia | Crocodylomorpha | Paralligatoridae | |
Wannchampsus ("Wann Langston, Jr.'s crocodile") is an extinct genus of paralligatorid neosuchian, close to but not a true crocodilian. It is known from fossils discovered in Lower Cretaceous rocks in north-central Texas, United States.