| Named By: | Othniel Charles Marsh in 1889 |
| Time Period: | Late Cretaceous, 100.5-97 Ma |
| Location: | USA, Wyoming & Kansas |
| Size: | Estimated between 4 and 6 meters long |
| Diet: | Herbivore |
| Fossil(s): | 2 individuals represented by partial remains. Additional armour scutes |
| Classification: | | Chordata | Reptilia | Dinosauria | Ornithischia | Thyreophoroidea | Ankylosauria | Nodosauridae | |
Nodosaurus (meaning "knobbed lizard") was a genus of herbivorous ankylosaurian dinosaur from the Late Cretaceous, the fossils of which are found in North America.