• Acromegalomma acrophthalmos (Grube, 1878)
• Acromegalomma adriaticum (Giangrande, Caruso, Mikac & Licciano, 2015)
• Acromegalomma bioculatum (Ehlers, 1887)
• Acromegalomma carunculatum (Tovar-Hernández & Salazar-Vallejo, 2008)
• Acromegalomma cinctum (Fitzhugh, 2003)
• Acromegalomma circumspectum (Moore, 1923)
• Acromegalomma claparedei (Gravier, 1906)
• Acromegalomma coloratum (Chamberlin, 1919)
• Acromegalomma fauchaldi (Giangrande, Licciano & Gambi, 2007)
• Acromegalomma georgiense (Tovar-Hernández & Carrera-Parra, 2011)
• Acromegalomma gesae (Knight-Jones, 1997)
• Acromegalomma heterops (Perkins, 1984)
• Acromegalomma inflatum (Capa & Murray, 2009)
• Acromegalomma interruptum (Capa & Murray, 2009)
• Acromegalomma jubatum (Capa & Murray, 2015)
• Acromegalomma kaikourense (Knight-Jones, 1997)
• Acromegalomma lanigerum (Grube, 1846)
• Acromegalomma lobiferum (Ehlers, 1887)
• Acromegalomma longoventrale (Giangrande, Caruso, Mikac & Licciano, 2015)
• Acromegalomma messapicum (Giangrande & Licciano, 2008)
• Acromegalomma miyukiae (Nishi, 1998)
• Acromegalomma modestum (Quatrefages, 1866)
• Acromegalomma multioculatum (Fitzhugh, 2002)
• Acromegalomma mushaense (Gravier, 1906)
• Acromegalomma nechamae (Knight-Jones, 1997)
• Acromegalomma pacifici (Grube, 1859)
• Acromegalomma perkinsi (Tovar-Hernández & Salazar-Vallejo, 2006)
• Acromegalomma phyllisae (Capa & Murray, 2009)
• Acromegalomma pigmentum (Reish, 1963)
• Acromegalomma pseudogesae (Mikac, Giangrande & Licciano, 2013)
• Acromegalomma quadrioculatum (Willey, 1905)
• Acromegalomma roulei (Gravier, 1908)
• Acromegalomma schwindtae Tovar-Hernández, de León-González & Bybee, 2017
• Acromegalomma splendidum (Moore, 1905)
• Acromegalomma sumbense Tovar-Hernández, ten Hove & de León-González in Tovar-Hernández et al, 2020
• Acromegalomma suspiciens (Ehlers, 1904)
• Acromegalomma trioculatum (Reish, 1968)
• Acromegalomma vesiculosum (Montagu, 1813)
• Alaysia spiralis Southward, 1991
• Amphicora fabricia (Müller, 1776) accepted as Fabricia stellaris (Müller, 1774)
• Amphicora fabricii [auctt. misspelling] accepted as Fabricia stellaris (Müller, 1774)
• Amphicora mediterranea Leydig, 1851 accepted as Amphiglena mediterranea (Leydig, 1851)
• Amphicora sabella Ehrenberg, 1836 accepted as Fabricia stellaris (Müller, 1774)
• Amphicorina argus Quatrefages, 1866 accepted as Myxicola aesthetica (Claparède, 1870)
• Amphicorina armandi (Claparède, 1864)
• Amphicorina ascidicola Yoshihara, Hiruta, Katoh & Kajihara, 2012
• Amphicorina bichaeta Capa & López, 2004
• Amphicorina bicincta (Ozolinsh, 1988)
• Amphicorina bicoloris (Rouse, 1990)
• Amphicorina busseltonensis (Hartmann-Schröder, 1982)
• Amphicorina coalescens (Banse, 1959)
• Amphicorina cursoria Quatrefages, 1866 accepted as Oridia armandi (Claparède, 1864) accepted as Amphicorina armandi (Claparède, 1864)
• Amphicorina desiderata Quatrefages, 1866 accepted as Amphiglena mediterranea (Leydig, 1851)
• Amphicorina ezoensis Yoshihara, Hiruta, Katoh & Kajihara, 2012
• Amphicorina grahamensis Giangrande, Montanaro & Castelli, 1999
• Amphicorina hynensis (Knight-Jones, 1983)
• Amphicorina mobilis (Rouse, 1990)
• Amphicorina pacifica (Rullier, 1972)
• Amphicorina pectinata (Banse, 1957)
• Amphicorina perkinsi Capa & López, 2004
• Amphicorina rovignensis Mikac, Giangrande & Licciano, 2013
• Amphicorina schlenzae Nogueira & Amaral, 2000
• Amphicorina triangulata López & Tena, 1999
• Amphiglena armandi Claparède, 1864 accepted as Amphiglena mediterranea (Leydig, 1851)
• Amphiglena bondi Capa & Rouse, 2007
• Amphiglena gracilis Capa & Rouse, 2007
• Amphiglena jimenezi Capa & López, 2004
• Amphiglena joyceae Tilic, Feerst & Rouse, 2019
• Amphiglena lenae Capa & Rouse, 2007
• Amphiglena lindae Rouse & Gambi, 1997
• Amphiglena magna Capa & Rouse, 2007
• Amphiglena maiteae Capa & Rouse, 2007
• Amphiglena marita Chlebovitsch, 1959 accepted as Amphiglena pacifica Annenkova, 1934
• Amphiglena mediterranea (Leydig, 1851)
• Amphiglena nathae Rouse, 1994
• Amphiglena nishii Capa & Rouse, 2007
• Amphiglena pacifica Annenkova, 1934
• Amphiglena seaverae Tilic, Feerst & Rouse, 2019
• Amphiglena terebro Rouse, 1993
• Amphiserpula lineatuba (Straughan, 1967) accepted as Spiraserpula lineatuba (Straughan, 1967)
• Amphiserpula rubens (Straughan, 1967) accepted as Serpula rubens Straughan, 1967
• Amplaria spiculosa Knight-Jones, 1973 accepted as Amplicaria spiculosa (Knight-Jones, 1973)
• Amplicaria spiculosa (Knight-Jones, 1973)
• Anamobaea orstedii Krøyer, 1856
• Anamobaea phyllisae Tovar-Hernandez & Salazar-Vallejo, 2006
• Anisomelus luteus Templeton, 1835 (uncertain > nomen dubium)
• Anomalorbis manuatus Vine, 1972
• Apomatolos simplex Uchida, 1978 accepted as Rhodopsis simplex (Uchida, 1978)
• Apomatopsis ampulliferus (Philippi, 1844) accepted as Apomatus ampulliferus Philippi, 1844
• Apomatopsis enoshimae (Marenzeller, 1885) accepted as Apomatus enosimae Marenzeller, 1884
• Apomatopsis enosimae (Marenzeller, 1885) accepted as Apomatus enosimae Marenzeller, 1884
• Apomatopsis geniculata (Moore & Bush, 1904) accepted as Apomatus geniculata (Moore & Bush, 1904) represented as Apomatus geniculatus (Moore & Bush, 1904)
• Apomatus ampulliferus Philippi, 1844
• Apomatus brownii Pixell, 1913 accepted as Protis brownii (Pixell, 1913)
• Apomatus elisabethae McIntosh, 1885
• Apomatus enosimae Marenzeller, 1884
• Apomatus geniculata (Moore & Bush, 1904) represented as Apomatus geniculatus (Moore & Bush, 1904)
• Apomatus geniculatus (Moore & Bush, 1904)
• Apomatus giganteus Iroso, 1921 accepted as Apomatus ampulliferus Philippi, 1844
• Apomatus globifer Théel, 1878