Oxychilidae is a taxonomic family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Gastrodontoidea.

The distribution of Oxychilidae includes the Nearctic, western-Palearctic, eastern-Palearctic, Neotropical, Ethiopia and Hawaii.

[3] The following three subfamilies were recognized in the taxonomy of Bouchet & Rocroi (2005): Genera within the Oxychilidae include: Subfamily Oxychilinae Subfamily Daudebardiinae Subfamily Nastiinae Subfamily incertae sedis The following cladogram shows the phylogenic relationships of this family to the other families within the limacoid clade:[3] Staffordiidae Dyakiidae Pristilomatidae Chronidae Euconulidae Trochomorphidae Gastrodontidae Oxychilidae Trigonochlamydidae Parmacellidae Milacidae Zonitidae Helicarionidae Ariophantidae Urocyclidae Vitrinidae Boettgerillidae Limacidae Agriolimacidae