Atropis abbreviata (W.H. Pease, 1865) French Polynesia, Topatii5 mm
Cryptassiminea adelaidensis H. Fukuda & W.F. Ponder,2005
Assiminea aethiopica K.H.J. Thiele, 1927 Somalia
Taiwanassiminea affinis (Böttger, 1887)
Omphalotropis albescens (L. Pfeiffer, 1855)
Omphalotropis albocarinata A. Mousson, 1873 Norfolk Island
Omphalotropis albolabris (O.F. von Möllendorff,1897) La Reunion Island6 mm
Assiminea aldra W.H. Dall, 1915
Assiminea alveolata J.M.R.M. Viader, 1939
Rapanella andersoni (FOSSIL) C.M. Cooke& W.J. Clench, 1943 † Cook Islands, Rapa Island
Angustassiminea andrewsiana (E.A. Smith, 1900)
Rugapedia androgyna H. Fukuda & W.F. Ponder,2004
Thaanumella angulosa (C.M.F. Ancey, 1890) Micronesia
Assiminea angustata H.A. Pilsbry, 1901 Japan, Hokkaido
Ovassiminea annulata A. Hallan, H. Fukuda& Kameda, 2015
Omphalotropis antelmei E.H. Madge, 1946 La Reunion Island5 mm
Omphalotropis arbusculae E. Fischer-Piette, F. Blanc& F. Salvat, 1969
Balambania aries (FOSSIL) (O.F. von Möllendorff,1890 †) Philippines
Omphalotropis aurantiaca G.P. Deshayes, 1855 India, Pondicherry
Assiminea aurifera H.B. Preston, 1912 Tanzania
Metassiminea australis K.H.J. Thiele, 1927
Assiminea avilai J.J. Van Aartsen, 2008 Azores3 mm
Dominamaria beauforti W.S.S. Van Benthem-Jutting, 1963
Taiwanassiminea bedaliensis (B. Rensch, 1934)
Assiminea beddomiana G. Nevill, 1881 Thailand
Assiminea bella Kuroda, 1958
Garrettia biangulata (W.H. Pease, 1865) Cook Islands
Omphalotropis bifilaris A. Mousson, 1865 Tonga
Assiminea blanfordi R.T. Abbott, 1958 Philippines
Assiminea boettgeri R.T. Abbott, 1958 Philippines
Atropis boraborensis (H.W.L. Dorhn, 1859) French Polynesia, Bora-Bora
Assiminea bragai A. Nobre, 1937
Duritropis brenchleyi (E.R. Sykes, 1900) Norfolk Island6 mm
Assiminea brevicula (L. Pfeiffer, 1855) Malaysia, Borneo6 mm
Assiminea bridgesi L. Pfeiffer, 1855