Truncilla is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae, the river mussels.
| Truncilla | |
|---|---|
 | |
| Truncilla truncata | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Unionida |
| Family: | Unionidae |
| Tribe: | Lampsilini |
| Genus: | Truncilla Rafinesque, 1819 |
