| Named By: | Peter M. Galton in 1980 |
| Time Period: | Middle Jurassic, approximately 163 Ma |
| Location: | England, Cambridgeshire - Oxford Clay Formation |
| Size: | Uncertain due to lack of remains, but roughly estimated to have been about 2.5 meters long |
| Diet: | Herbivore |
| Fossil(s): | Almost complete left femur (thigh bone). A partial tibia (shin bone) is now also attributed to the genus |
| Classification: | | Chordata | Reptilia | Dinosauria | Ornithischia | Ornithopoda | Dryosauroidea | Dryosauridae | |
| Also known as: | | Camptosaurus leedsi | |
Callovosaurus (meaning "Callovian lizard") is a genus of iguanodontian dinosaur known from most of a left thigh bone discovered in Middle Jurassic-age rocks of England. At times, it has been considered dubious or a valid genus of basal iguanodontian, perhaps a dryosaurid.