| Named By: | A.P. Hunt, M. Lockley, S. Lucas & C. Meyer in 1995 |
| Time Period: | Late Cretaceous, 68 Ma |
| Location: | India - Lameta Formation |
| Size: | Estimated at 18 meters long |
| Diet: | Herbivore |
| Fossil(s): | Partial post cranial remains and skull elements |
| Classification: | | Chorsdata | Reptilia | Dinosauria | Sauropoda | Titanosauridae | Saltasaurinae | |
| Also known as: | | Antarctosaurus septentrionalis | |
Jainosaurus is a large titanosaurian dinosaur of India and wider Asia, which lived in the Maastrichtian (approximately 68 million years ago). A herbivorous quadruped, an adult Jainosaurus would have measured around eighteen metres long and held its head six metres high. No accurate estimate of the weight has yet been made. The humerus of the type specimen is 134 centimetres long.