American Malacological Society: Dedicated to the study and preservation of mollusks. Offers data about the order, publications and links.
Bailey-Matthews Shell Museum: Information about the museum as well as illustrated and annotated lists of southwestern Florida shells.
Conchological Society of Great Britain and Ireland: Information about the society, its activities and publications.
Conchologists of America: Information about mollusks and the society as well as related publications, clubs and upcoming events.
Conquiliologistas do Brasil: Illustrated list of Brazilian mollusks with data on distribution and ecology.
Dutch Malacological Society: Information about the society, its activities, publications and a sheller list. Also viewable in Dutch.
Jacksonville Shell Club: Resource that includes information on American mollusks (marine, land and freshwater) as well as various families.
Malacological Society of Australasia: Promotes the study, conservation and appreciation of molluscs. Data about the society is included.