Anomia trigonopsis, also known as the New Zealand jingle, is a species of marine bivalve mollusc in the family Anomiidae, the anomiids.
Austrovenus is a genus of marine bivalve molluscs, in the family Veneridae. This genus is native to New Zealand.
Austrovenus stutchburyi, common name the New Zealand cockle or New Zealand little neck clam, is an edible saltwater clam, a marine bivalve mollusc in the family Veneridae, the Venus clams. Its Māori name is tuangi or tuaki.
Barbatia novaezelandiae, or the New Zealand ark, is a bivalve mollusc of the family Arcidae.
Barnea similis, a rock borer or piddock, is a marine bivalve mollusc in the family Pholadidae.
Bassina is a genus of bivalve molluscs in the family Veneridae.
Bassina yatei is a bivalve mollusc of the family Veneridae.
Chlamys zeelandona is a bivalve mollusc of the family Pectinidae.

Cleidothaerus albidus is a bivalve mollusc of the family Cleidothaeridae, the only member of its genus and family. It is endemic to southeast Australia and the North Island of New Zealand, including the Chatham Islands.

Crassostrea ingens is a species of fossil oyster, a marine bivalve mollusk in the family Ostreidae, the oyster. This species lived during the Pliocene. Fossils have been found in New Zealand shallow-water limestone and shellbeds. Locations include the Wairarapa, Whanganui basin, Gisborne district, North Canterbury, and Hawke's Bay.
Crassula aequilatera, known as the triangle shell, is a surf clam, a moderately large marine bivalve mollusc in the family Mactridae.
Diplodonta globus is a species of marine bivalve mollusc in the family Ungulinidae.
Dosinia anus, commonly named the ringed dosinia, coarse dosinia, coarse biscuit shell and tuangi-haruru, in the Māori language, is a species of saltwater clam, a marine bivalve mollusc in the family Veneridae, the venus clams. The species is common to both of the main islands of New Zealand, where it is the largest and heaviest species in the genus, occasionally exceeding 80 mm in diameter. It buries itself in clean fine sandy substrata, sub-tidally down to 15 m deep.
Dosinia maoriana is a medium-sized marine clam, a bivalve mollusc of the family Veneridae, or Venus clams.

The dredge oyster or Bluff oyster, Ostrea chilensis, known in Chile as ostra chilena, the Chilean oyster, is a species of marine bivalve mollusc in the family Ostreidae.

Echyridella menziesii, the New Zealand freshwater mussel, also known by its Māori names kākahi, kāeo, and torewai, is a species of freshwater mussel endemic to New Zealand. E. menziesii is an aquatic bivalve mollusc in the family Unionidae, the river mussels.
Felaniella zelandica is a species of medium-sized marine bivalve mollusc in the family Ungulinidae.
Gari convexa is a bivalve mollusc of the family Psammobiidae.
Glycymeris modesta, or the small dog cockle, is a marine bivalve mollusc in the family Glycymerididae.

Hiatella arctica, known as the wrinkled rock-borer, the arctic hiatella or the arctic saxicave, is a species of saltwater clam, a marine bivalve mollusc in the family Hiatellidae. The white shell of this mollusc is thick and more or less rectangular, but generally irregular in shape. It is up to 45 mm long.
Irus elegans is a bivalve mollusc of the family Veneridae.
Lima colorata zealandica is a subspecies of bivalve mollusc in the family Limidae.
Limatula maoria is a species of bivalve mollusc in the family Limidae.

Lithophaga truncata is a date mussel, a marine bivalve mollusc in the family Mytilidae.
Longimactra is a genus of large marine bivalve molluscs or clams, in the family Mactridae.
Longimactra elongata is a species of large bivalve mollusc in the family Mactridae.
Macomona liliana, or the large wedge shell, is a bivalve mollusc of the family Tellinidae.
Mactra ovata is a trough shell of the family Mactridae.
Mesopeplum is a genus of scallops, marine bivalve molluscs in the family Pectinidae.
Mesopeplum convexum is a species of scallop, marine bivalve molluscs in the family Pectinidae.
Modiolarca impacta is a species of saltwater clam, a mussel, a marine bivalve mollusk in the family Mytilidae, the mussels.

Modiolus americanus, or the bearded horse-mussel a species of bivalve mollusc in the family Mytilidae. It is found in New Zealand. Its shell typically is 90 millimetres (3.5 in).

Monia zelandica, is a species of marine bivalve mollusc in the family Anomiidae, the jingle shells.
Notirus reflexus is a bivalve mollusc of the family Veneridae
Notocallista is a genus of marine bivalve molluscs in the family Veneridae.
Notocallista multistriata is a marine bivalve mollusc in the family Veneridae

Nucula rossiana is a saltwater nut clam, a marine bivalve mollusc in the family Nuculidae.

Offadesma angasi is a bivalve mollusc of the family Periplomatidae.
Panopea zelandica, commonly known as the deepwater clam or New Zealand geoduck, is a large species of marine bivalve mollusc in the Panopea (geoduck) genus of the family Hiatellidae. It is also sometimes called a king clam, or a gaper – in reference to the shell not being closed at either end.

Paphies is a genus of large, edible, saltwater clams, marine bivalve molluscs in the family Mesodesmatidae. The genus is endemic to New Zealand. The species in this genus include the pipi, tuatua and toheroa.

Paphies australis or pipi is a bivalve mollusc of the family Mesodesmatidae, endemic to New Zealand.

Paphies ventricosa, or toheroa, is a large bivalve mollusc of the family Mesodesmatidae, endemic to New Zealand.
Pecten novaezelandiae, common name the New Zealand scallop, is a bivalve mollusc of the family Pectinidae, the scallops. Its name is sometimes found misspelt as Pecten novaezealandiae.

Perna canaliculus, the New Zealand green-lipped mussel, also known as the New Zealand mussel, the greenshell mussel, kuku, and kutai, is a bivalve mollusc in the family Mytilidae. P. canaliculus has economic importance as a cultivated species in New Zealand.
Pratulum is a genus of marine bivalve molluscs in the family Cardiidae.
Pratulum pulchellum is a species of cockle, a marine bivalve mollusc in the family Cardiidae.

Purpurocardia purpurata is a marine bivalve mollusc in the family Carditidae. Its genus was long included in Venericardia, but is increasingly treated as distinct.
Ruditapes largillierti is a saltwater clam, a marine bivalve mollusc in the family Veneridae, the Venus clams. They are moderately large for their genus, elongate and subrectangular, thick and solid, with smooth ventral margin.

Saccostrea glomerata, is an oyster species endemic to Australia and New Zealand. In Australia, it is known as the Sydney rock oyster and is commercially farmed. In New Zealand, where the species is not farmed, it is known as the New Zealand rock oyster or Auckland oyster. The species is closely related to Saccostrea cucullata, the hooded oyster, which is common on Indo-Pacific rocky shores.

Solemya velum, the Atlantic awning clam, is a species of marine bivalve mollusc in the family Solemyidae, the awning clams. This species is found along the eastern coast of North America, from Nova Scotia to Florida.
Soletellina nitida, commonly known as the shining sunset shell, is a bivalve mollusc of the family Psammobiidae.
Talochlamys zelandiae, common name the New Zealand fan shell, is a bivalve mollusc of the family Pectinidae, the scallops.

Tawera spissa, the morning star shell, is a species of marine bivalve from the Veneridae family. T. spissa is endemic to New Zealand.
Paphies subtriangulata is a species of edible bivalve clam known as tuatua in the Māori language, a member of the family Mesodesmatidae and endemic to New Zealand. It is found on all three of the main New Zealand islands, buried in fine clean sand on ocean beaches.
Tucetona laticostata, or the large dog cockle, is a salt water clam or marine bivalve mollusc in the family Glycymerididae.
Zenatia is a genus of medium-sized clams, marine bivalve molluscs in the family Mactridae.
Zenatia acinaces is a species of moderately large marine bivalve mollusc in the family Mactridae.