Turgenitubulus aslini G.A. Solem, 1985
Trachia asperella (L. Pfeiffer, 1846)
Glyptorhagada asperrima C. Hedley, 1905
Austrochloritis astaeus G.P.L.K. Gude, 1906
Amplirhagada astuta T. Iredale, 1939
Planispira atacta (L. Pfeiffer, 1861)
Discoconcha atalanta (W.J. Clench, 1933)
Chloritis athrix (O.F. von Möllendorff,1901)
Amplirhagada atlantis F. Köhler, 2011
Amphidromus atricallosus (A.A. Gould, 1843)
Amphidromus atricallosus classiarius C. Sutcharit & S. Panha,2006
Amphidromus atricallosus laidlawi G.A. Solem, 1965
Amphidromus atricallosus leucoxanthus (E.C. Von Martens, 1854)
Amphidromus atricallosus perakensis H.C. Fulton, 1901
Amphidromus atricallosus temasek S.K. Tan, G.L. Chan& S. Panha, 2011
Planispira atrofusca L. Pfeiffer, 1861
Amphidromus attapeuensis Thach & F. Huber, 2017
Polydontes audebardi (L.A. Reeve, 1851)
Australocosmica augustae F. Köhler, 2011
Figuladra aureedensis (J.W. Brazier, 1872)
Mandarina aureola R. Tiba, 1989
Zachrysia auricoma (A.E.J. Férussac, 1822)
Zachrysia auricoma havanensis H.A. Pilsbry, 1894
Zachrysia auricoma noscibilis (A.E.J. Férussac, 1819)
Papuina aurora L. Pfeiffer, 1862
Ningbingia australis G.A. Solem, 1981
Ningbingia australis elongata G.A. Solem, 1988
Ordtrachia australis G.A. Solem, 1984
Sinumelon aversum T. Iredale, 1937
Satsuma bacca (L. Pfeiffer, 1865)
Semotrachia bagoti G.A. Solem, 1993
Satsuma bairdi A. Adams, 1870
Sphaerospira bala (J.W. Brazier, 1878)
Trachia balansai (L.J. Morlet, 1886)
Trachia balansai cincta (P. Dautzenberg& H. Fischer, 1905)