Sciteconus ariejoostei (S.G. Veldsman, 2016)
Miliariconus aristophanes (G.B. II Sowerby, 1857)
Conus aristos (FOSSIL) Jung, 1965 †
Graphiconus armadillo (T. Shikama, 1971)
Conasprella armiger (J.C.H. Crosse, 1858)
Conus armoricus (FOSSIL) H.H. Suter, 1917 †
Conus arntzenii (FOSSIL) Martin, 1916 †
Conasprella articulata (G.B. III Sowerby, 1873)
Pseudohermes artoptus (G.B. II Sowerby, 1833)
Conus asheri (FOSSIL) E.J. Petuch, 1988 †
Phasmoconus asiaticus (A.J. Da Motta, 1985)
Phasmoconus asiaticus lovellreevei G. Raybaudi Massilia,1993
Leptoconus asphaltodes (FOSSIL) Beets, 1953 †
Trovaoconus ateralbus (L.C. Kiener, 1850)
Rolaniconus athenae (R.M. Filmer, 2011)
Pionoconus atimovatae L. Bozzetti, 2012
Trovaoconus atlanticoselvagem (C.M.L. Afonso& M.J. Tenorio, 2004)
Attenuiconus attenuatus (L.A. Reeve, 1844)
Vituliconus augur (J. Lightfoot, 1786)
Leptoconus aulacophorus (FOSSIL) Cossmann, 1900 †
Darioconus aulicus (C. Linnaeus, 1758)
Tenorioconus aurantius (C.H. Hwassin J.G. Bruguière, 1792)
Darioconus auratinus (A.J. Da Motta, 1982)
Attenuiconus aureonimbosus (E.J. Petuch, 1987)
Gradiconus aureopunctatus (E.J. Petuch, 1987)
Cylinder aureus (C.H. Hwassin J.G. Bruguière, 1792)
Cylinder aureus paulucciae G.B. III Sowerby, 1877
Darioconus auricomus (C.H. Hwassin J.G. Bruguière, 1792)
Pionoconus aurisiacus (C. Linnaeus, 1758)
Graphiconus australis (H.S. Holten, 1802)
Chelyconus austriaconoe (FOSSIL) Sacco, 1893 †
Pseudohermes austroviola (D. Röckel & W. Korn,1992)
Conus avellana (FOSSIL) Lamarck, 1810 †
Rolaniconus axelrodi (J.G. Walls, 1978)
Varioconus babaensis (E. Rolán & D. Röckel,2001)