| Named By: | Teresa Maryanska in 1977 |
| Time Period: | Late Cretaceous, 75-70 Ma |
| Location: | Mongolia, Nemegt Basin - Barun Goyot Formation |
| Size: | Up to 6.6 meters long |
| Diet: | Herbivore |
| Fossil(s): | Skulls and post cranial remains |
| Classification: | | Chordata | Reptilia | Dinosauria | Thyreophoroidea | Ornithischia | Ankylosauridae | Ankylosaurinae | |
Saichania (Mongolian meaning "beautiful one") is a genus of herbivorous ankylosaurid dinosaur from the Late Cretaceous period of Mongolia and China.
The first fossils of Saichania were found in the early 1970s in Mongolia. In 1977 the type species Saichania chulsanensis was named. The description of this species has been based on limited fossil material; especially the rear of the animal is not well known.
Saichania was over five metres long and weighed over two tonnes. It was more robustly built than other members of the Ankylosauridae. Neck vertebrae, shoulder girdle, ribs and breast bones were fused or firmly connected. Its body was flat and low-slung, standing on four short legs. The forelimbs were very powerful. The head was protected by bulbous armour tiles. It could defend itself against predators like Tarbosaurus with a tail-club. On the torso keeled osteoderms were present. Saichania bit off plants in its desert habitat with a horny beak and processed them in its wide hindgut.