Pachychilidae
| Pachychilidae Temporal range: Paleogene - recent | |
|---|---|
| Two shells of Pachychilus laevissimus | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Mollusca | 
| Class: | Gastropoda | 
| Subclass: | Caenogastropoda | 
| Superfamily: | Cerithioidea | 
| Family: | Pachychilidae P. Fischer & Crosse, 1892 | 
| Type genus | |
| Pachychilus I. Lea & H. C. Lea, 1851 | |
| Diversity | |
| 191-226 extant species | |
| Synonyms | |
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Pachychilidae, common name pachychilids, is a taxonomic family of freshwater snails, gastropod molluscs in the clade Sorbeoconcha.