| Named By: | Emanuel Bunzel in 1871 |
| Time Period: | Late Cretaceous, 85 Ma |
| Location: | Austria - Coal-Bearing Complex Formation, Grunbach Formation. France. Romania - Sanpetru Formation, Sard Formation, Sebes Formation. Spain - Sierra Perenchiza Formation, Vitoria Formation |
| Size: | About 2.2 meters long |
| Diet: | Herbivore |
| Fossil(s): | Numerous individuals |
| Classification: | | Chordata | Reptilia | Dinosauria | Ornithischia | Nodosauridae | Struthiosaurinae | |
| Also known as: | | Crataeomus | Danubiosaurus | Leipsanosaurus | Pleuropeltis | Rhodanosaurus | Hoplosaurus | |
Struthiosaurus (Latin struthio = ostrich + Greek sauros = lizard) is one of the smallest known and most basal genera of nodosaurid dinosaurs, from the Late Cretaceous period (Campanian-Maastrichtian) of Austria, Romania and France in Europe. It was protected by body armour. Although estimates of its length vary, it may have been as small as 2.2 metres (7.2 ft) long.