| Named By: | Altangerel Perle in 1980 |
| Time Period: | Late Cretaceous, 90 Ma |
| Location: | Mongolia - Bayan Shireh Formation |
| Size: | Estimated at 4.5 to 6 meters long. Skull is twenty-five centimetres long |
| Diet: | Herbivore |
| Fossil(s): | Almost complete skull with mandible (lower jaw) and partial post cranial remains |
| Classification: | | Chordata | Reptilia | Dinosauria | Saurischia | Theropoda | Therizinosauridae | |
Erlikosaurus is a genus of herbivorous theropod dinosaur from the late Cretaceous Period, belonging to the Therizinosauridae. Its fossils, a skull and some post-cranial fragments, were found in the Bayan Shireh Formation of Mongolia, dating to around 90 million years ago.