| Named By: | Charles Whitney Gilmore in 1928 |
| Time Period: | Late Cretaceous 75-70 Ma |
| Location: | Canada, Alberta. USA, Montana & North Dakota |
| Size: | Around 1.5 to 1.8 meters long |
| Diet: | Carnivore |
| Fossil(s): | Remains of many individuals, though often just teeth and vertebrae, two partial skeletons are known |
| Classification: | | Chordata | Reptilia | Squamata | Varanoidea | Varanidae | |
Palaeosaniwa canadensis is an extinct species of carnivorous lizard from the late Cretaceous of North America. The name, given by Charles Whitney Gilmore in 1928, means "ancient Saniwa from Canada".