| Named By: | Birgir Bohlin in 1953 |
| Time Period: | Late Jurassic-Early Cretaceous |
| Location: | China - Kalazha Formation. South Korea - Hasandong Formation |
| Size: | Impossible to know because no skeletal reamins exist only teeth |
| Diet: | Herbivore |
| Fossil(s): | Two teeth |
| Classification: | | Chordata | Reptilia | Dinosauria | Saurischia | Sauropoda | |
Chiayusaurus (meaning "Chia-yu-kuan lizard", after where it was found) was a genus of sauropod dinosaur known from teeth found in Asia. Two species have been named for this obscure genus. It was originally named as Chiayusaurus, but the ICZN does not permit special characters, so it has become Chiayusaurus. The old name can still be seen in older sources, though.