| Named By: | Jeffrey A. Wilson, Dhananjay M. Mohabey, Shanan E. Peters & Jason J. Head in 2010 |
| Time Period: | Late Cretaceous, 68 Ma |
| Location: | India, Gujurat - Lameta Formation |
| Size: | Skull, 9.5 centimetres long, total length 3.5 meters long |
| Diet: | Carnivore |
| Fossil(s): | Almost complete skull, jaws and 72 vertebrae, in a total of five articulated sections |
| Classification: | | Chordata | Reptilia | Squamata | Serpentes | Madtsoiidae | |
Sanajeh (meaning "ancient gape" in Sanskrit) is a genus of late Cretaceous madtsoiid snake from western India. A recently described fossil from the Lameta Formation has been found coiled around an egg and an adjacent skeleton of a 50 cm long sauropod dinosaur hatchling. This suggests that the snake preyed on hatchling sauropods at nesting sites.