| Named By: | Hwang, Norell, Qiang & Keqin in 2004 |
| Time Period: | Early Cretaceous, 125 Ma |
| Location: | China, Lioning Province - Yixian Formation |
| Size: | 1.8 meters long |
| Diet: | Carnivore |
| Fossil(s): | Two specimens, one of which is almost complete except for the end of the tail |
| Classification: | | Chordata | Reptilia | Dinosauria | Saurischia | Theropoda | Compsognathidae | |
Huaxiagnathus is a genus of theropod dinosaur from the Lower Cretaceous of China. It was a compsognathid, large for that group at about half a meter longer than Compsognathus and larger specimens of Sinosauropteryx, with the largest specimen about 1.8 meters (5.9 feet) in length.
The name Huaxiagnathus is derived from the Chinese Hua Xia, Hua Xia , a traditional word for "China", and from the Greek gnathos, Latinised into gnathus, meaning "jaw."