| Named By: | Wand & Zhou in 2006 |
| Time Period: | Early Cretaceous, 122 Ma |
| Location: | China, Liaoning Province - Yixian Formation |
| Size: | Information not available at the time of writing |
| Diet: | unavailable |
| Fossil(s): | Barremian of the Cretaceous |
| Classification: | | Chordata | Reptilia | Pterosauria | Pterodactyloidea | Ctenochasmatidae | |
Cathayopterus is a ctenochasmatid pterosaur from the Early Cretaceous-age Yixian Formation of Liaoning, China. It is a member of the group of pterosaurian filter-feeders. The type species is C. grabaui, described in 2006 by Wang and Zhou.