| Named By: | R. Endo in 1940 |
| Time Period: | Early Cretaceous |
| Location: | China - Yixian Formation. Japan - Kuwajima Formation, Okurodani Formation |
| Size: | Skull 5 centimetres long, total body length about 40 centimetres |
| Diet: | Herbivore |
| Fossil(s): | Many individuals, some almost complete with elements of soft tissue |
| Classification: | | Chordata | Reptilia | Choristodera | Monjurosuchidae | |
| Also known as: | | Rhynchosaurus orientalis | |
Monjurosuchus is a genus of choristoderan reptile that lived in what is now China and Japan during the Early Cretaceous. It has large eyes, a rounded skull, robust legs with short claws, and a long, thin tail. Fossils have been found that preserve soft tissue, showing that it had soft skin and webbed feet. Monjurosuchus has been placed in the family Monjurosuchidae along with Philydrosaurus, but the relationships of early choristoderes remains unclear.