Between brackets is the number of accepted species

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- Mollusca (132 754)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (24 992)
- Class Caudofoveata (143)
- Class Cephalopoda (1 832)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 679)
- Subclass Amphigastropoda † (387)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 623)
- Subclass Gastropoda incertae sedis (308)
- Subclass Heterobranchia (39 154)
- Infraclass "Lower Heterobranchia" (1 137)
- Infraclass Euthyneura (37 431)
- Subterclass Acteonimorpha (411)
- Superfamily Acteonoidea A. d'Orbigny, 1842 (332)
- Family Acteonidae A. d'Orbigny, 1842 (262)
- Genus Actaeon Ersch & Gruber, 1818 accepted as Acteon Montfort, 1810
- Genus Actaeonidea Gabb, 1873 † accepted as Rictaxis Dall, 1871
- Genus Actaeonina [sic] † accepted as Acteonina A. d'Orbigny, 1850 †
- Genus Acteon Montfort, 1810 (126)
- Genus Acteonina A. d'Orbigny, 1850 † (3)
- Genus Bathyacteon Á. Valdés, 2008 accepted as Metactaeon Thiele, 1931
- Genus Buccinulus Herrmannsen, 1852 accepted as Pupa Röding, 1798
- Genus Bulimactaeon Cossmann, 1892 † (1)
- Genus Callostracon sensu F. Nordsieck, 1972 accepted as Callostracon Repetto & Bianco, 2012
- Genus Callostracon Repetto & Bianco, 2012 (3)
- Genus Colostracon Hamlin, 1884 † (1)
- Genus Crenilabium Cossmann, 1889 (15)
- Genus Crenilabrum accepted as Crenilabium Cossmann, 1889
- Genus Dactylus Schumacher, 1817 accepted as Pupa Röding, 1798
- Genus Eoacteon L. W. Stephenson, 1955 † accepted as Crenilabium Cossmann, 1889
- Genus Fortisia Bayan, 1870 † accepted as Liocarenus G. F. Harris & Burrows, 1891 †
- Genus Hemiauricula Deshayes, 1853 † (2)
- Genus Inopinodon Bouchet, 1975 (1)
- Genus Japanacteon [sic] accepted as Japonactaeon Is. Taki, 1956
- Genus Japonactaeon Is. Taki, 1956 (12)
- Genus Japonacteon [sic] accepted as Japonactaeon Is. Taki, 1956
- Genus Lanayrella Salvador & C. Cunha, 2020 (2)
- Genus Liocarenus G. F. Harris & Burrows, 1891 † accepted as Hemiauricula Deshayes, 1853 † (1)
- Genus Lissactaeon Monterosato, 1890 accepted as Crenilabium Cossmann, 1889
- Genus Maxacteon Rudman, 1971 accepted as Punctacteon Kuroda & Habe, 1961
- Genus Metactaeon Thiele, 1931 (2)
- Genus Mysouffa Ev. Marcus, 1974 (2)
- Genus Neactaeonina Thiele, 1912 (6)
- Genus Neoacteonina [sic] accepted as Neactaeonina Thiele, 1912
- Genus Nucleopsis Conrad, 1865 † (1)
- Genus Obrussa Iredale, 1925 accepted as Obrussena Iredale, 1930
- Genus Obrussena Iredale, 1930 (3)
- Genus Ongleya H. J. Finlay & Marwick, 1937 † (1)
- Genus Ovactaeonina Cossmann, 1895 † (3)
- Genus Ovulactaeon Dall, 1889 (2)
- Genus Pitharella F. E. Edwards, 1860 † (1)
- Genus Pseudactaeon Thiele, 1925
- Genus Punctacteon Kuroda & Habe, 1961 (15)
- Genus Pupa Röding, 1798 (23)
- Genus Rapturella Salvador & C. Cunha, 2016 (3)
- Genus Ravniella Rosenkrantz, 1970 † (1)
- Genus Rictaxis Dall, 1871 (7)
- Genus Semiactaeon Cossmann, 1889 †
- Genus Solidula Fischer von Waldheim, 1807 accepted as Pupa Röding, 1798
- Genus Speo Risso, 1826 accepted as Acteon Montfort, 1810
- Genus Strigopupa Habe, 1958 accepted as Pupa Röding, 1798
- Genus Tenuiactaeon Aldrich, 1921 † (2)
- Genus Tornatella Lamarck, 1816 accepted as Acteon Montfort, 1810 (1)
- Subgenus Tornatella (Actaeon) Ersch & Gruber, 1818 accepted as Acteon Montfort, 1810
- Species Tornatella acuta A. d'Orbigny, 1841 †
- Species Tornatella affinis J. De C. Sowerby, 1836 † accepted as Tornatellaea affinis (J. De C. Sowerby, 1836) †
- Species Tornatella affinis Dujardin, 1837 †
- Species Tornatella aizyensis Deshayes, 1862 † accepted as Acteon aizyensis (Deshayes, 1862) †
- Species Tornatella alba G. B. Sowerby III, 1874 accepted as Rictaxis albus (G. B. Sowerby III, 1874)
- Species Tornatella alligata Deshayes, 1832 † accepted as Raulinia alligata (Deshayes, 1832) †
- Species Tornatella alveola Souverbie, 1863 accepted as Pupa tessellata (Reeve, 1842)
- Species Tornatella auricula Grateloup, 1828 †
- Species Tornatella bevaletii Baudon, 1853 † accepted as Pupa bevaletii (Baudon, 1853) †
- Species Tornatella biplicata Melleville, 1843 † accepted as Acteon biplicatus (Melleville, 1843) †
- Species Tornatella bullata A. Gould, 1847 accepted as Toledonia bullata (A. Gould, 1847)
- Species Tornatella bullata Kiener, 1834 accepted as Acteocina bullata (Kiener, 1834)
- Species Tornatella cabanetiana A. d'Orbigny, 1841 † accepted as Itieria cabanetiana (A. d'Orbigny, 1841) †
- Species Tornatella cancellata Grateloup, 1828 †
- Species Tornatella carnea Bivona e Bernardi, 1832 accepted as Acteon tornatilis (Linnaeus, 1758)
- Species Tornatella chevallieri Deshayes, 1862 † accepted as Acteon chevallieri (Deshayes, 1862) †
- Species Tornatella cincta Münster, 1844 †
- Species Tornatella cinerea (R. B. Watson, 1884) accepted as Pupa affinis (A. Adams, 1855)
- Species Tornatella clathrata R. A. Philippi, 1836 accepted as Euparthenia humboldti (Risso, 1826)
- Species Tornatella coccinata Reeve, 1842 accepted as Pupa coccinata (Reeve, 1842)
- Species Tornatella conica Münster, 1844 † accepted as Trochactaeon conicus (Münster, 1844) †
- Species Tornatella costellata Dujardin, 1837 †
- Species Tornatella dactylina Deshayes, 1862 † accepted as Rictaxis dactylinus (Deshayes, 1862) †
- Species Tornatella dargelasi Basterot, 1825 †
- Species Tornatella deshayesi de Raincourt & Munier-Chalmas, 1863 † accepted as Acteon deshayesi (de Raincourt & Munier-Chalmas, 1863) †
- Species Tornatella dormoisiana A. d'Orbigny, 1841 †
- Species Tornatella elata Koenen, 1882 † accepted as Monotygma elata (Koenen, 1882) †
- Species Tornatella elongata R. A. Philippi, 1837 † accepted as Euparthenia bulinea (R. T. Lowe, 1841)
- Species Tornatella elongata Grateloup, 1828 †
- Species Tornatella fabreana Crosse, 1873 accepted as Punctacteon fabreanus (Crosse, 1873)
- Species Tornatella fasciata Lamarck, 1816 accepted as Acteon tornatilis (Linnaeus, 1758)
- Species Tornatella ferussaci Deshayes, 1862 † accepted as Acteon subinflatus A. d'Orbigny, 1850 †
- Species Tornatella flammea (Gmelin, 1791) accepted as Punctacteon flammeus (Gmelin, 1791)
- Species Tornatella fragilis Dunker, 1846 † accepted as Cylindrobullina fragilis (Dunker, 1846) †
- Species Tornatella fumata Reeve, 1865 accepted as Pupa affinis (A. Adams, 1855)
- Species Tornatella gigantea J. De C. Sowerby, 1832 † accepted as Trochactaeon giganteus (J. De C. Sowerby, 1832) †
- Species Tornatella glabra Reeve, 1842 accepted as Pupa sulcata (Gmelin, 1791)
- Species Tornatella globosa Bronn, 1831 †
- Species Tornatella globulina Forbes, 1844 accepted as Rapturella globulina (Forbes, 1844)
- Species Tornatella insculpta Reeve, 1842 accepted as Pupa coccinata (Reeve, 1842)
- Species Tornatella intermedia Grateloup, 1828 †
- Species Tornatella lacryma Michelin, 1834 † accepted as Ringinella lacryma (Michelin, 1834) †
- Species Tornatella lactea Michaud, 1829 accepted as Euparthenia humboldti (Risso, 1826)
- Species Tornatella laeta Deshayes, 1862 † accepted as Acteon subinflatus A. d'Orbigny, 1850 †
- Species Tornatella laevigata Grateloup, 1828 † accepted as Acteon laevigatus (Grateloup, 1828) †
- Species Tornatella lamarcki J. De C. Sowerby, 1832 † accepted as Trochactaeon lamarcki (J. De C. Sowerby, 1835) †
- Species Tornatella lamarckii Münster, 1844 † accepted as Trochactaeon goldfussi (A. d'Orbigny, 1850) †
- Species Tornatella loustaui Deshayes, 1861 † accepted as Acteon loustaui (Deshayes, 1861) †
- Species Tornatella maculosa Grateloup, 1828 †
- Species Tornatella minuta Petterd, 1879 accepted as Acteon minutus (Petterd, 1879)
- Species Tornatella monthiersi Carez, 1879 † accepted as Acteon monthiersi (Carez, 1879) †
- Species Tornatella munieri Deshayes, 1862 † accepted as Rictaxis munieri (Deshayes, 1862) †
- Species Tornatella nitidula Lamarck, 1816 accepted as Pupa nitidula (Lamarck, 1816)
- Species Tornatella oryza Reeve, 1842
- Species Tornatella ovulum L. Pfeiffer, 1840 accepted as Microtralia ovulum (L. Pfeiffer, 1840)
- Species Tornatella papyracea Basterot, 1825 †
- Species Tornatella parisiensis Deshayes, 1862 † accepted as Tornatellaea parisiensis (Deshayes, 1862) †
- Species Tornatella pellucida MacGillivray, 1843 accepted as Acteon tornatilis (Linnaeus, 1758)
- Species Tornatella procera Deshayes, 1862 † accepted as Acteon procerus (Deshayes, 1862) †
- Species Tornatella pulchella J. A. Eudes-Deslongchamps, 1849 †
- Species Tornatella punctata A. d'Orbigny, 1841 accepted as Acteon punctostriatus (C. B. Adams, 1840)
- Species Tornatella punctatosulcata R. A. Philippi, 1841 † accepted as Acteon punctatosulcata (R. A. Philippi, 1841) †
- Species Tornatella punctocaelata P. P. Carpenter, 1864 accepted as Rictaxis punctocaelatus (P. P. Carpenter, 1864)
- Species Tornatella punctostriata C. B. Adams, 1840 accepted as Japonactaeon punctostriatus (C. B. Adams, 1840)
- Species Tornatella punctulata A. Férussac, 1822 † accepted as Acteon punctulatus (A. Férussac, 1822) †
- Species Tornatella pusilla MacGillivray, 1843
- Species Tornatella pusilla Forbes, 1844 accepted as Japonactaeon pusillus (Forbes, 1844)
- Species Tornatella pyramidata Deshayes, 1835 † accepted as Ptycheulimella pyramidata (Deshayes, 1835) †
- Species Tornatella robinsoni Tate, 1870 †
- Species Tornatella scalaris Münster, 1841 †
- Species Tornatella semistriata Basterot, 1825 † accepted as Acteon semistriatus (Basterot, 1825) †
- Species Tornatella senegalensis Petit de la Saussaye, 1851 accepted as Acteon senegalensis (Petit de la Saussaye, 1851)
- Species Tornatella sieboldii Reeve, 1842 accepted as Japonactaeon sieboldii (Reeve, 1842)
- Species Tornatella sphaericula Deshayes, 1861 † accepted as Acteon sphaericulus (Deshayes, 1862) †
- Species Tornatella subglobosa Münster, 1844 † accepted as Trochactaeon giganteus subglobosus (Münster, 1844) †
- Species Tornatella subglobosa Grateloup, 1828 †
- Species Tornatella suturalis (A. Adams, 1855) accepted as Japonactaeon suturalis (A. Adams, 1855)
- Species Tornatella tessellata Reeve, 1842 accepted as Pupa tessellata (Reeve, 1842)
- Species Tornatella textilis Guppy, 1873 †
- Species Tornatella truncatula Bronn, 1831 †
- Species Tornatella turgida Deshayes, 1862 † accepted as Acteon turgidus (Deshayes, 1862) †
- Species Tornatella turricula Eichwald, 1853 †
- Species Tornatella turrita Dujardin, 1837 †
- Species Tornatella vagabunda Mabille, 1885 accepted as Lanayrella vagabunda (Mabille, 1885)
- Species Tornatella venusta A. d'Orbigny, 1841 accepted as Acteon venustus (A. d'Orbigny, 1841)
- Species Tornatella virgata Reeve, 1842 accepted as Acteon virgatus (Reeve, 1842)
- Species Tornatella voluta Münster, 1844 † accepted as Trochactaeon lamarcki lamarcki (J. De C. Sowerby, 1832) †
- Genus Tornatellaea Conrad, 1860 † (14)
- Genus Tornatellaeinae Bandel & Dockery, 2016 † accepted as Acteonidae A. d'Orbigny, 1842
- Genus Triploca Tate, 1894 (2)
- Genus Volvaria Lamarck, 1801 † (5)
- Genus Volvariella P. Fischer, 1883 † accepted as Volvaria (Volvariella) P. Fischer, 1883 †
- Genus Wangacteon Stilwell, 1993 † (1)
- Family Aplustridae Gray, 1847 (43)
- Family Bullinidae Gray, 1850 accepted as Aplustridae Gray, 1847
- Family Cylindrobullinidae Wenz, 1938 † (18)
- Family Hydatinidae Pilsbry, 1895 accepted as Aplustridae Gray, 1847
- Family Nonacteoninidae Bandel, 1994 † accepted as Aplustridae Gray, 1847 (1)
- Family Pupidae Kuroda, 1941 accepted as Acteonidae A. d'Orbigny, 1842
- Family Solidulidae Meek & Hayden, 1860 accepted as Acteonidae A. d'Orbigny, 1842
- Family Sulcoactaeonidae Gründel, 1997 † accepted as Aplustridae Gray, 1847
- Family Tornatellidae J. Fleming, 1828 accepted as Acteonidae A. d'Orbigny, 1842
- Family Tubiferidae Cossmann, 1895 † (8)
- Family Zardinellidae Bandel, 1994 †
- Superfamily Rissoelloidea Gray, 1850 (79)
- Subterclass Ringipleura (2 917)
- Subterclass Tectipleura (34 103)
- Superorder Euthyneura incertae sedis
- Infraclass Heterobranchia incertae sedis (478)
- Infraclass Mesoneura (108)
- Infraclass Opisthobranchia
- Infraclass Pulmonata
- Subclass Neomphaliones accepted as Vetigastropoda
- Subclass Neritimorpha (1 914)
- Subclass Orthogastropoda represented as Gastropoda
- Subclass Patellogastropoda (511)
- Subclass Prosobranchia
- Subclass Psilogastropoda represented as Gastropoda
- Subclass Vetigastropoda (6 782)
- Class Lamellibranchiata accepted as Bivalvia
- Class Loricata accepted as Polyplacophora
- Class Mollusca incertae sedis † (372)
- Class Monoplacophora (229)
- Class Pelecypoda accepted as Bivalvia
- Class Polyplacophora (1 377)
- Class Polyplaxiphora accepted as Polyplacophora
- Class Rostroconchia † (64)
- Class Scaphopoda (752)
- Class Solenoconchia accepted as Scaphopoda
- Class Solenogastres (313)
- Subclass Chaetodermomorpha accepted as Caudofoveata