Amphidromus andytani Thach & Abbas, 2017
Montanomelon angatjana G.A. Solem, 1993
Rhagada angulata G.A. Solem, 1997
Lamprellia angulata J. Stanisic, 2010
Amphidromus angulatus H.C. Fulton, 1896
Polydontes angustata (J.E. Gray, 1828)
Stegodera angusticollis E.C. Von Martens, 1876
Amplirhagada angustocauda F. Köhler, 2011
Amphidromus anhdaoorum Thach, 2017
Camaena anhi Thach, 2017
Mandarina anijimana R. Chiba, 1996
Amphidromus annae (E.C. Von Martens, 1891)
Isomeria anodonta H.A. Pilsbry, 1949
Amphidromus anthonyabbotti Thach & F. Huber, 2017
Papuina antiqua (A. Adams & L.A. Reeve,1848)
Crystallopsis aphrodite (L. Pfeiffer, 1859)
Polydontes apollo L. Pfeiffer, 1860
Figuladra appendiculata (L.A. Reeve, 1854)
Torresitrachia aquilonia F. Köhler, 2011
Camaena arata G.B. Sowerby, 1892
Granulomelon arcigerens (R. Tate, 1894)
Amphidromus areolatus (L. Pfeiffer, 1861)
Austrochloritis argilacea (A.E.J. Férussac, 1821)
Chloritis argillacea (A.E.J. Férussac, 1821)
Chloritis argillacea newtoni (A. Nobre, 1937)
Neveritis aridorum (J.C. Cox, 1866)
Satsuma arisana J.T. Kuroda, 1941
Satsuma arisana takahasii J.T. Kuroda, 1941
Amphidromus arlingi N.N. Thach, 2017
Xanthomelon arnhemense F. Köhler & G.E. Burghardt,2016
Papuina arrowensis (E.J. Le Guillou, 1842)
Sphaerospira arthuriana (J.C. Cox, 1873)
Austrochloritis ascensa T. Iredale, 1943
Westraltrachia ascita G.A. Solem, 1984
Satsuma ashimae H.A. Pilsbry