• Adeorbisina Greco, 1899 †
• Adeorbisina canavarii Greco, 1899 †
• Aechmospira X.-D. Qiao, 1983 †
• Aechmospira norma X.-D. Qiao, 1983 †
• Afrollonia Adegoke, 1977 †
• Afrollonia vilcassina Pacaud, 2017 †
• Agagus Jousseaume, 1894
• Agagus agagus Jousseaume, 1894
• Agagus stellamaris D. G. Herbert, 1991
• Agathistoma Olsson & Harbison, 1953
• Agathistoma antiqua S. N. Nielsen, Frassinetti & Bandel, 2004 †
• Agathistoma fasciatum (Born, 1778)
• Agathistoma hotessierianum (A. d'Orbigny, 1842)
• Agathistoma lividomaculatum (C. B. Adams, 1845)
• Agathistoma nordestinum Dornellas, Graboski, Hellberg & Lotufo, 2021
• Agathistoma patagonicum (A. d'Orbigny, 1838) accepted as Tegula patagonica (A. d'Orbigny, 1838)
• Agathistoma viridulum (Gmelin, 1791)
• Akoya Habe, 1961
• Akoya akoya (Kuroda, 1942)
• Akoya haliarchus (Melvill, 1889)
• Akoya platinum (Dall, 1890)
• Akoya shinayaka Habe, 1961 accepted as Akoya akoya (Kuroda, 1942)
• Akoya zhui Vilvens, 2024
• Alcyna A. Adams, 1860
• Alcyna acia Cotton, 1948
• Alcyna australis Hedley, 1907
• Alcyna exigua (A. Gould, 1861)
• Alcyna kapiolaniae Pilsbry, 1917 accepted as Alcyna ocellata A. Adams, 1860
• Alcyna kingensis (Gabriel, 1956)
• Alcyna kuhnsi Pilsbry, 1917 accepted as Alcyna ocellata A. Adams, 1860
• Alcyna kuhnsi humerosa Pilsbry, 1917 accepted as Alcyna ocellata A. Adams, 1860
• Alcyna lepida A. Adams, 1860 accepted as Alcyna ocellata A. Adams, 1860
• Alcyna lifuensis Melvill & Standen, 1896
• Alcyna lineata Pease, 1869 accepted as Alcyna subangulata Pease, 1861
• Alcyna lucida (H. Adams, 1868)
• Alcyna ocellata A. Adams, 1860
• Alcyna rubra Pease, 1861 accepted as Alcyna ocellata A. Adams, 1860
• Alcyna striata Pease, 1869 accepted as Alcyna subangulata Pease, 1861
• Alcyna subangulata Pease, 1861
• Alcyna subangulata flammulata Pilsbry, 1917 accepted as Alcyna subangulata Pease, 1861
• Alcyna subangulata virgata Pilsbry, 1917 accepted as Alcyna subangulata Pease, 1861
• Alcyninae S. T. Williams, K. M. Donald, Spencer & T. Nakano, 2010
• Alertalex Dell, 1956 accepted as Maurea (Alertalex) Dell, 1956 represented as Maurea W. R. B. Oliver, 1926
• Alertalex blacki Dell, 1956 accepted as Maurea (Alertalex) alertae (B. A. Marshall, 1995) represented as Maurea alertae (B. A. Marshall, 1995)
• Amonilea Cossmann, 1920 †
• Amonilea crescens (T. Fuchs, 1870) †
• Amonilea mitis (Deshayes, 1863) †
• Amonilea parnensis (Bayan, 1870) †
• Amphitrochus Cossmann, 1907 †
• Amphitrochus closta W.-M. Feng, 1996
• Amphitrochus duplicatus (J. Sowerby, 1817) †
• Amphitrochus mogharensis Douvillé, 1916 † (uncertain > unassessed)
• Amphitrochus mogharensis var. costata Douvillé, 1916 † (uncertain > unassessed)
• Amphitrochus muensteri Gründel, Keupp & F. Lang, 2017 †
• Amphitrochus polythelis W.-M. Feng, 1996
• Amphitrochus thouetensis (Hébert & E. Eudes-Deslongchamps, 1860) †
• Ampullotrochus Monterosato, 1890 accepted as Calliostoma (Ampullotrochus) Monterosato, 1890 represented as Calliostoma Swainson, 1840
• Ampullotrochus brugnonei Monterosato, 1890 † accepted as Calliostoma brugnonei (Monterosato, 1890) †
• Amyxa Troschel, 1852 accepted as Prisogaster Mörch, 1850
• Anadema H. Adams & A. Adams, 1854
• Anadema macandrewii (Mörch, 1868)
• Anceps V. P. Kolesnikov, 1939 †
• Anceps adelae (A. d'Orbigny, 1845) †
• Anceps anceps (Eichwald, 1850) †
• Anceps blainvillei (A. d'Orbigny, 1845) †
• Anceps pageana (A. d'Orbigny, 1845) †
• Anceps papilla (Eichwald, 1850) †
• Anceps sarmates (Eichwald, 1850) †
• Anceps siminescui Harzhauser, 2021 † accepted as Anceps simionescui Harzhauser, 2021 †
• Anceps simionescui Harzhauser, 2021 †
• Anceps sopronensis (A. Papp, 1954) †
• Anceps subblainvillei (Sinzov, 1897) †
• Anceps urupensis (Uspenskaya, 1927) † accepted as Gibbula urupensis (Uspenskaya, 1927) †
• Anematina Knight, 1933 †
• Anematina conica (Winchell, 1863) †
• Anematina indiscreta Mazaev, 2019 †
• Anematina nordhusiana (Dietz, 1911) †
• Anematina parva Nützel, 2012 †
• Anematina permiana (Yakovlev, 1899) †
• Anematina rugosa Mazaev, 2015 †
• Angaria Röding, 1798
• Angaria (Angaria) Röding, 1798 represented as Angaria Röding, 1798
• Angaria (Angaria) complanata Gain, Belliard & Le Renard, 2018 † represented as Angaria complanata Gain, Belliard & Le Renard, 2018 †
• Angaria (Angaria) constantinensis Gain, Belliard & Le Renard, 2018 † represented as Angaria constantinensis Gain, Belliard & Le Renard, 2018 †
• Angaria (Angaria) gymna (Cossmann & Pissarro, 1902) † represented as Angaria gymna (Cossmann & Pissarro, 1902) †
• Angaria (Angaria) manifesta Berezovsky, 2022 † represented as Angaria manifesta Berezovsky, 2022 †
• Angaria (Angaria) nigellensis Gain, Belliard & Le Renard, 2018 † represented as Angaria nigellensis Gain, Belliard & Le Renard, 2018 †
• Angaria (Angaria) polyphylla (A. d'Orbigny, 1850) † represented as Angaria polyphylla (A. d'Orbigny, 1850) †
• Angaria (Angaria) proviliacensis Pacaud, 2017 † represented as Angaria proviliacensis Pacaud, 2017 †
• Angaria (Angaria) regleyana (Deshayes, 1832) † represented as Angaria regleyana (Deshayes, 1832) †
• Angaria (Angaria) reynieri (Cossmann, 1913) † represented as Angaria reynieri (Cossmann, 1913) †
• Angaria (Angaria) scobina (Brongniart, 1823) † represented as Angaria scobina (Brongniart, 1823) †
• Angaria (Angaria) scutellata Gain, Belliard & Le Renard, 2018 † represented as Angaria scutellata Gain, Belliard & Le Renard, 2018 †
• Angaria (Angaria) subcalcar (A. d'Orbigny, 1850) † represented as Angaria subcalcar (A. d'Orbigny, 1850) †
• Angaria (Nudangarita) Beets, 1942 † accepted as Angaria Röding, 1798
• Angaria (Nudangarita) ardjunoi Beets, 1942 † accepted as Angaria ardjunoi Beets, 1942 †
• Angaria (Pseudoninella) Sacco, 1896 † accepted as Pseudoninella Sacco, 1896 †
• Angaria aculeata (Reeve, 1842) accepted as Angaria delphinus (Linnaeus, 1758)
• Angaria ardjunoi Beets, 1942 †
• Angaria arion Röding, 1798 accepted as Angaria delphinus (Linnaeus, 1758)