|Named By:||C. M. Sternberg in 1937|
|Time Period:||Late Cretaceous, 70 Ma|
|Location:||Canada, Alberta - Horseshoe Cnayon Formation|
|Size:||About 2.5 meters long|
|Fossil(s):||Skull and partial post cranial fossils|
|Classification:||| Chordata | Reptilia | Dinosauria | Ornithischia | Ornithopoda ||
|Also known as:||| Thescelosaurus warreni ||
Parksosaurus (meaning "William Parks's lizard") is a genus of hypsilophodont ornithopod dinosaur from the early Maastrichtian-age Upper Cretaceous Horseshoe Canyon Formation of Alberta, Canada. It is based on most of a partially articulated skeleton and partial skull, showing it to have been a small, bipedal, herbivorous dinosaur. It is one of the few described non-hadrosaurid ornithopods from the end of the Cretaceous in North America, existing around 70 million years ago.