List of data deficient molluscs

In September 2016, the International Union for Conservation of Nature (IUCN) listed 1988 data deficient mollusc species.

This is a complete list of data deficient mollusc species and subspecies evaluated by the IUCN.

There are 392 species and 32 subspecies in the order Stylommatophora evaluated as data deficient.

There are 171 species and three subspecies in the class Bivalvia evaluated as data deficient.

There are 74 species and three subspecies in the order Veneroida evaluated as data deficient.

14 extinct in the wild mollusc species (0.20%) 581 critically endangered mollusc species (8.4%) 507 endangered mollusc species (7.3%) 879 vulnerable mollusc species (13%) 535 near threatened mollusc species (7.7%) 2437 least concern mollusc species (35%) 1988 data deficient mollusc species (29%)