Bienosaurus
| Bienosaurus Temporal range: Early Jurassic,  | |
|---|---|
| Holotype right dentary | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Clade: | Dinosauria | 
| Clade: | †Ornithischia | 
| Clade: | †Saphornithischia | 
| Clade: | †Genasauria | 
| Clade: | †Thyreophora | 
| Genus: | †Bienosaurus Dong, 2001 | 
| Species: | †B. lufengensis | 
| Binomial name | |
| †Bienosaurus lufengensis Dong, 2001 | |
Bienosaurus (meaning "Bien's lizard") is a dubious genus of thyreophoran dinosaur from the Lower Jurassic (probably Sinemurian) Lower Lufeng Formation in Yunnan Province in China.