| Cyrtonaias | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Unionida |
| Family: | Unionidae |
| Tribe: | Lampsilini |
| Genus: | Cyrtonaias Crosse & Fischer, 1894 |
Cyrtonaias is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae.