| Thiara | |
|---|---|
| Thiara cancellata shell | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | incertae sedis |
| Superfamily: | Cerithioidea |
| Family: | Thiaridae |
| Genus: | Thiara Röding, 1798 |
| Type species | |
| Helix amarula Linnaeus, 1758 | |
| Synonyms | |
| |
Thiara is a genus of freshwater snails, aquatic gastropod mollusks in the subfamily Thiarinae of the family Thiaridae.

Species with accepted names within the genus Thiara include: