| Named By: | Anatoly Konstantinovich Rozhdestvensky in 1966 |
| Time Period: | Late Cretaceous, 96-88 Ma |
| Location: | Mongolia - Dashuigou Formation. Possibly also China, Gansu Province - Lower Red Unit Formation |
| Size: | Estimated about 5.5 meters long |
| Diet: | Herbivore |
| Fossil(s): | Partial remains |
| Classification: | | Chordata | Reptilia | Dinosauria | Ornithischia | Ornithopoda | Iguanodontia | |
| Also known as: | | Probactrosaurus alshanicus | |
Probactrosaurus (meaning "before Bactrosaurus") is an early herbivorous hadrosauroid iguanodont dinosaur. It lived in China during the Late Cretaceous period. It is often known as the Asian Iguanodon.