As of September 2016, the International Union for Conservation of Nature (IUCN) lists 507 endangered mollusc species. 7.0% of all evaluated mollusc species are listed as endangered. The IUCN also lists nine mollusc subspecies as endangered. No subpopulations of molluscs have been evaluated by the IUCN. This is a complete list of endangered mollusc species and subspecies evaluated by the IUCN.