| Named By: | K. Gao & Z. Cheng in 1999 |
| Time Period: | Early Cretaceous, 106.9 Ma |
| Location: | China -Doushan Formation. Japan |
| Size: | Unavailable |
| Diet: | Carnivore |
| Fossil(s): | Partial remains of at least two individuals |
| Classification: | | Chordata | Reptilia | Scincomorpha | |
Pachygenys ("thick jaw") is a genus of scincomorphan lepidosaur from the Lower Cretaceous of Japan. Its name is composed of the Greek words pakhus pachys ("thick") and genus genys ("jaw").