Satsuma yaeyamensis (H.A. Pilsbry, 1894)
Kimboraga yammerana G.A. Solem, 1985
Kimboraga yampiensis G.A. Solem, 1985
Amphidromus yangbayensis Thach & Huber, 2016
Cupedora yappalana G.A. Solem, 1992
Ventopelita yatalaensis (J.C. Cox, 1873)
Labyrinthus yatesi (L. Pfeiffer, 1855)
Amphidromus yauyeejiae Thach & Abbas, 2017
Amphidromus yenlinhae Thach & F. Huber, 2017
Thersites yeppoonensis R.H. Beddome, 1897
Lacustrelix yerelinana G.A. Solem, 1992
Globorhagada yoowadan F. Köhler, 2011
Amplirhagada yorkensis F. Köhler, 2010
Satsuma yoronjimana M. Azuma, 1990
Marylnessa yulei (E. Forbes, 1851)
Lamprellia zebina (J.W. Brazier, 1878)
Thersites zebrina (J.W. Brazier, 1829)
Papuina zeno J.W. Brazier, 1876
Planispira zodiacus (A.E.J. Férussac, 1821)
Planispira zonaria (C. Linnaeus, 1758)
Albersia zonulata (A.E.J. Férussac, 1821)
Albersia zonulata recluziana (E.J. Le Guillou, 1842)