| Named By: | P. Godefroit, H. Li, & C.inY. Shang in 2005 |
| Time Period: | Early Cretaceous |
| Location: | Mongolia - Bayan Gobi Formation |
| Size: | Unknown |
| Diet: | Herbivore |
| Fossil(s): | Partial jaw |
| Classification: | | Chordata | Reptilia | Dinosauria | Ornithischia | Ornithopoda | Iguanodontia | Hadrosauroidea | |
Penelopognathus ("wild duck jaw") is a genus of dinosaur which lived during the Early Cretaceous. It was an iguanodont ancestral to hadrosaurids. Fossils have been found in the Bayin-Gobi Formation in what is now China. The type species, Penelopognathus weishampeli, was described by Godefroit, Li, and Shang in 2005, based on fragmentary jaw fossils.