Murex aduncospinosus G.B. II Sowerby, 1841
Typhis adventus (FOSSIL) P. Vella, 1961 †
Pazinotus advenus L.H. Poorman, 1980
Coralliophila aedonia (R.B. Watson, 1886)
Attiliosa aenigma (FOSSIL) D.G. Herbert & R. Portell,2002 †
Siphonochelus aethomorpha R. Houart & V. Héros,2015
Coralliophila africana C. Smriglio & P. Mariottini,2002
Dermomurex africanus E.H. Vokes, 1978
Murex africanus W.F. Ponder & E.H. Vokes,1988
Morula aglaos (R. Houart, 1995)
Dermomurex agnesae E.H. Vokes, 1995
Siratus aguayoi (W.J. Clench& I. Pérez Farfante, 1945)
Afritrophon agulhasensis (K.H.J. Thiele, 1925)
Uttleya ahiparana (A.W.B. Powell, 1927)
Coralliophila ahuiri T. Cossignani, 2009
Murexsul aikeni M. Lussi, 2010
Triplex aitus (FOSSIL) (A. De Gregorio, 1885 †)
Flexopteron akainakares R. Houart & V. Héros,2015
Pterochelus akation (E.H. Vokes, 1993)
Chicoreus akritos G.E. Radwin & D'Attilio,1976
Siratus alabaster (L.A. Reeve, 1845)
Dermomurex alabastrum (A. Adams, 1864)
Panamurex alaquaensis (FOSSIL) (W.C. Mansfield, 1935 †)
Boreotrophon alaskanus W.H. Dall, 1902
Eupleura alata (FOSSIL) M.A. Peyrot, 1938 †
Typhina alata (FOSSIL) (Sowerby, 1850 †)
Typhina alata obesa (FOSSIL) (W.M. Gabb, 1873 †)
Pterynotus alatus (P.F. Röding, 1798)
Morula albanigra R. Houart, 2002
Poirieria albionis (FOSSIL) Wrigley, 1934 †
Coralliophila alboangulata (E.A. Smith, 1890)
Pterynotus albobrunneus H.W. Bertsch & D'Attilio,1980
Trophon albolabratus E.A. Smith, 1875
Drupa albolabris (H.M.D. de Blainville,1832)
Trophonopsis alboranensis (C. Smriglio, P. Mariottini& A. Bonfitto, 1997)