Tripoplax abyssicola (A.G. Smith & E. Cowan,1966)
Ischnochiton acomphus A.F.B. Hull & J.J. Risbec,1930
Lepidozona acostata Sirenko, 2016
Stenoplax acrior H.A. Pilsbry, 1892
Ischnochiton adelaidensis (L.A. Reeve, 1847)
Lepidozona aequispinus J.R.M. Bergenhayn, 1933
Ischnochiton aidae G. Righi, 1973
Ischnochiton alascensis K.H.J. Thiele, 1909
Stenoplax alata (G.B. II Sowerby, 1841)
Tripoplax alba (H. Saito, 2013)
Ischnochiton albidus K.V.W. Palmer, 1945
Ischnochiton albinus K.H.J. Thiele, 1911
Tripoplax albrechtii (L. von Schrenck, 1862)
Stenosemus albus (C. Linnaeus, 1767)
Tripoplax allyni (A. Ferreira, 1977)
Lepidozona allynsmithi A. Ferreira, 1974
Allochiton altus (FOSSIL) Fucini, 1912 †
Lepidozona amabilis (S.S. Berry, 1917)
Tripoplax andrijaschevi (A.M. Jakovleva, 1952)
Ischnochiton anserinus (FOSSIL) (G.F. Laghi, 1977 †)
Ischnochiton arbutum (L.A. Reeve, 1847)
Stenoplax arythronota (C.B. Adams, 1845)
Ischnochiton aspidaulax H.A. Pilsbry, 1896
Tripoplax attuensis (K.B. Clark, 2000)
Ischnochiton australis (G.B. II Sowerby, 1833)
Stenoplax bahamensis P. Kaas & R.A. Van Belle,1987
Ischnochiton bakeri W.G. Torr, 1912
Tripoplax balaenophila (E. Schwabe & J. Sellanes,2004)
Tripoplax baxteri (K.B. Clark, 2000)
Ischnochiton bergoti (C. Vélain, 1877)
Tripoplax beringiana (K.B. Clark, 2000)
Lepidozona beui H.B. O'Neill, 1987
Ischnochiton bigranosus P. Kaas & R.A. Van Belle,1990
Bathychiton biondii B. Dell'Angelo & S. Palazzi,1988
Lepidozona bisculpta (P.P. Carpenterin H.A. Pilsbry, 1892)