| Named By: | V. M. Efimov in 1999 |
| Time Period: | Late Jurassic,[1] 150.8-145.5 Ma |
| Location: | Russia |
| Size: | Unavailable |
| Diet: | Carnivore/Piscivore |
| Fossil(s): | Partial skull and post cranial skeletal remains |
| Classification: | | Chordata | Reptilia | Ichthyosauria | Ophthalmosauridae | Platypterygiinae | |
| Also known as: | | Ophthalmosaurus gorodischensis | |
Undorosaurus is an extinct genus of ophthalmosaurid ichthyosaur known from western Russia.