| Named By: | Z. Dong in 1973 |
| Time Period: | Early Cretaceous |
| Location: | China, Xinjiang - Lianmugin Formation |
| Size: | Uncertain |
| Diet: | Carnivore |
| Fossil(s): | Partial left maxilla and partial left mandible (lower jaw) |
| Classification: | | Chordata | Reptilia | Dinosauria | Saurischia | Theropoda | Carcharodontosauridae | |
Kelmayisaurus is an extinct genus of carcharodontosaurid theropod dinosaur from the early Cretaceous. It was roughly 9-11 meters (30-36 feet) Its name refers to the petroleum-producing city of Karamay in the Xinjiang province of western China near where it was found.