| Named By: | Wang & Lu in 2005 |
| Time Period: | Early Cretaceous, 124.6 Ma |
| Location: | China, Liaoning Province - Yixian Formation |
| Size: | 125 centimetre wingspan |
| Diet: | unavailable |
| Fossil(s): | Single almost complete skeleton of a sub adult |
| Classification: | | Chordata | Reptilia | Pterosauria | Pterodactyloidea | Ornithocheiridae | |
Haopterus is a ornithocheiroid pterodactyloid pterosaur genus from the Barremian-Aptian-age Lower Cretaceous Yixian Formation of Liaoning, China. It was in 2001 named by Wang Xiaolin and Lu Junchang. The type species is Haopterus gracilis. The genus name honours Professor Hao Yichun and combines his name with a Latinised Greek pteron, "wing". The specific name, "slender-built" in Latin, refers to the condition of the metatarsals.