List of least concern molluscs
As of September 2016, the International Union for Conservation of Nature (IUCN) lists 2437 least concern mollusc species. 34% of all evaluated mollusc species are listed as least concern. The IUCN also lists five mollusc subspecies as least concern. No subpopulations of molluscs have been evaluated by the IUCN. This is a complete list of least concern mollusc species and subspecies evaluated by the IUCN. Gastropods. There are 1944 species and three subspecies of gastropod assessed as least concern. Stylommatophora. Stylommatophora includes the majority of land snails and slugs. There are 599 species and one  subspecies in the order Stylommatophora assessed as least concern. Helicids. Species Subspecies Littorinimorpha. There are 311 species and one subspecies in the order Littorinimorpha assessed as least concern. Bithyniids. Species Subspecies Sorbeoconcha. There are 132 species and one subspecies in the order Sorbeoconcha assessed as least concern. Paludomids. Species Subspecies Architaenioglossa. There are 158 species in the order Architaenioglossa assessed as least concern. Cycloneritimorpha. There are 40 species in the order Cycloneritimorpha assessed as least concern. Hygrophila species. There are 188 Hygrophila species assessed as least concern. Bivalvia. There are 296 species and two subspecies in the class Bivalvia assessed  as least concern. Unionida. There are 193 species and one subspecies in the order Unionoida assessed as least concern. Iridinids. Species Subspecies Venerida. There are 96 species and one subspecies in the order Veneroida assessed as least concern. Cyrenids. Species Subspecies Cephalopods. There are 197 cephalopod species assessed as least concern. Sepioloida. There are 45 species in Sepioloida assessed as least concern. Oegopsina species. There are 126 Oegopsina species assessed as least concern.