This is a list of the marine molluscs of the country of New Zealand, which are a part of the molluscan fauna of New Zealand, which is a part of the biodiversity of New Zealand.
Marine molluscs include marine gastropods (sea snails and sea slugs), bivalves (such as pipis, cockles, oysters, mussels, scallops), octopuses, squid and other classes of Mollusca. This list does not include the land and freshwater species.
Proneomenia quincarinata
Acanthochitonidae
Acanthochitona thileniusi
Acanthochitona zelandica
Craspedochiton rubiginosus - Craspedochiton rubiginosus rubiginosus, Craspedochiton rubiginosus oliveri
Cryptoconchus porosus
Notoplax aupouria
Notoplax cuneata
Notoplax facilis
Notoplax latalamina
Notoplax mariae
Notoplax violacea
Notoplax websteri
Mopaliidae
Aerilamma murdochi
Diaphoroplax biramosus
Frembleya egregia
Guildingia obtecta
Maorichiton caelatus
Maorichiton schauinslandi
Plaxiphora australis
Callochitonidae
Callochiton crocinus
Callochiton empleurus
Callochiton kapitiensis
Callochiton mortenseni
Chitonidae
Chiton glaucus
Onithochiton marmoratus
Onithochiton neglectus - Onithochiton neglectus neglectus, Onithochiton neglectus opiniosus, Onithochiton neglectus subantarcticus
Rhyssoplax aerea - Rhyssoplax aerea aerea, Rhyssoplax aerea huttoni
Rhyssoplax canaliculata
Rhyssoplax chathamensis
Rhyssoplax clavata
Rhyssoplax stangeri
Rhyssoplax suteri
Sypharochiton pelliserpentis
Sypharochiton sinclairi
Sypharochiton torri
Callochitonidae
Eudoxochiton nobilis
Ischnochitonidae
Ischnochiton circumvallatus
Ischnochiton granulifer
Ischnochiton luteoroseus
Ischnochiton maorianus
Leptochitonidae
Lepidopleurus finlayi
Lepidopleurus inquinatus
Lepidopleurus otagoensis
Loricidae
Lorica haurakiensis
Nacellidae
Cellana radians – golden limpet
Fissurellidae (keyhole limpets and slit limpets)
Cornisepta festiva
Monodilepas diemenensis
Monodilepas otagoensis
Scutus breviculus Blainville, 1817
Haliotidae
Haliotis iris – paua
Calliostomatidae
Calliostoma selectum – select maurea
Selastele onustum
Trochidae (top snails)
Diloma subrostrata – mudflat top shell
Fossarina rimata
Herpetopoma alacerrimum
Herpetopoma bellum
Herpetopoma benthicola
Herpetopoma larochei
Herpetopoma mariae
Homalopoma crassicostata
Homalopoma fluctuata
Homalopoma imperforata
Homalopoma micans
Homalopoma nana
Homalopoma rotella
Homalopoma umbilicata
Homalopoma variecostata
Turbinidae
Astraea heliotropium – circular saw shell
Cookia sulcata – Cook's turban
Lunella smaragda – cat's eye
Neritidae
Nerita melanotragus – black nerite
Batillariidae
Zeacumantus lutulentus – koeti (a horn shell)
Turritellidae
Maoricolpus roseus
Littorinidae (periwinkles)
Austrolittorina antipodum – banded periwinkle
Rissoidae
Alvania gallinacea
Alvania gradatoides
Struthiolariidae
Struthiolaria papulosa – ostrich foot
Ranellidae
Charonia tritonis – giant triton
Fusitriton retiolus
Monoplex parthenopeus – giant triton
Ranella olearium (Linnaeus, 1758) – wandering triton
Hipponicidae (hoof snails)
Hipponix conicus wyattae
Buccinidae (whelks)
Cominella glandiformis – mud whelk
Muricidae
Poirieria zelandica – spiny murex
Volutidae
Alcithoe arabica – Arabic volute
Iredalina mirabilis – golden volute
Olividae
Amalda australis – southern olive
Epitoniidae (wentletraps)
Funiscala maxwelli
Murdochella alacer
Janthinidae
Janthina janthina – violet snail
Okadaiidae
Vayssierea cinnabarea
Facelinidae
Babakina caprinsulensis
Bullidae
Bulla quoyii – brown bubble snail
Siphonariidae
Benhamina obliquata
Amphibolidae
Amphibola crenata – mud-flat snail
Onchidiidae
Onchidella nigricans
Mesodesmatidae
Paphies australis – pipi
Paphies subtriangulata – tuatua
Paphies ventricosa – toheroa
Tellinidae
Macomona liliana – large wedge shell
Veneridae
Austrovenus stutchburyi – New Zealand cockle
Dosinia anus – ringed dosinia
Ostreidae
Saccostrea cucullata – rock oyster
Tiostrea chilensis – Bluff oyster
Pectinidae
Pecten novaezelandiae – New Zealand scallop
Talochlamys zelandiae – New Zealand fan shell
Mytilidae
Gigantidas gladius
Mytilus edulis – blue mussel
Perna canalicula – New Zealand green-lipped mussel
Pinnidae
Atrina zelandica – horse mussel
Gadilidae
Cadulus colubridens
Cadulus delicatulus
Cadulus teliger
Dentaliidae
Dentalium diarrhox
Dentalium ecostatum
Dentalium glaucarena
Dentalium nanum
Dentalium suteri
Dentalium tiwhana
Dentalium zelandicum
Spirulidae
Spirula spirula – ram's horn squid
Sepiadariidae
Sepioloidea pacifica – Pacific bobtail squid
Sepiolidae
Iridoteuthis maoria
Cranchiidae
Mesonychoteuthis hamiltoni – colossal squid
Histioteuthidae
Histioteuthis reversa – reverse jewel squid
Octopodidae
Pinnoctopus cordiformis – common New Zealand octopus
Argonautidae
Argonauta nodosa – knobby argonaut
