Orania albozonata (E.A. Smith, 1890)
Boreotrophon albus R.V. Egorov, 1992
Attiliosa aldridgei (G.W. Nowell-Usticke,1969)
Favartia alfredensis (P. Bartsch, 1915)
Pygmaepterys alfredensis (P. Bartsch, 1915)
Favartia aliceae (E.J. Petuch, 1987)
Vokesimurex aliquantulus R. Houart & V. Héros,2015
Mipus alis M. Oliverio, 2008
Leptotrophon alis R. Houart, 2001
Prototyphis allani (FOSSIL) (P.A. Maxwell, 1971 †)
Chicoreus allaryi (R. Houart, P. Quiquandon& B. Briano, 2004)
Mancinella alouina (P.F. Röding, 1798)
Trophon alta (FOSSIL) Wood, 1842 †
Murex altispira W.F. Ponder & E.H. Vokes,1988
Favartia alveata (L.C. Kiener, 1842)
Trophon alveolatum (FOSSIL) Sowerby, 1826 †
Ocenebra alveolatus (FOSSIL) R. Tate, 1888 †
Triplex ambiguus (L.A. Reeve, 1845)
Zeatrophon ambiguus (R.A. Philippi, 1844)
Siratus amblyceras (FOSSIL) R. Tate, 1888 †
Cytharomorula ambonensis (R. Houart, 1996)
Morula ambrosia (R. Houart, 1995)
Thais ambustulata C. Hedley, 1912
Fuegotrophon amettei (A. Carcelles, 1946)
Coralliophila amirantium E.A. Smith, 1884
Typhinellus amoenus R. Houart, 1994
Siratus amplius (FOSSIL) E.H. Vokes, 1989 †
Cronia amygdala (L.C. Kiener, 1835)
Homalocantha anatomica (G. Perry, 1811)
Morula anaxares (L.C. Kiener, 1836)
Aspella anceps (J.B.P.A. Lamarck, 1822)
Trophon anceps (FOSSIL) R. Tate, 1888 †
Coralliophila andamana J.C. Melvill, 1889
Favartia andamanensis (R. Houart & Surya Rao,1996)
Calotrophon andrewsi E.H. Vokes, 1976