Cyclophorus trouiensis G.E.J. Wattebled, 1886
Cyclotus trusanensis H.H. Godwin-Austen, 1889
Owensgriffithsius tsaratananae K.C. Emberton, 2002
Chamalycaeus tsushimanus H.A. Pilsbry & Y. Hirase,1909
Japonia tumidula (J.F. Quadras& O.F. von Möllendorff, 1895)
Cyclophorus turgidus L. Pfeiffer, 1851
Cyclophorus turgidus angulatus H.A. Pilsbry, 1902
Cyclophorus turgidus miyakoensis H.A. Pilsbry & Y. Hirase,1905
Cyclophorus turgidus radians J.T. Kuroda, 1960
Ditropopsis tyloacron J.J. Vermeulen, T.S. Liew& M. Schilthuizen, 2015
Chamalycaeus umbonalis (W.H. Benson, 1856)
Pterocyclus umbraticus (W.S.S. Van Benthem-Jutting, 1949)
Millotorbis uncopercula K.C. Emberton, 1994
Leptopoma undatum (W. Metcalfe, 1851)
Cyclophorus unicus J.F. Mabille, 1887
Dioryx urnula (W.H. Benson, 1853)
Cyclophorus validus G.B. Sowerby, 1842
Leptopomoides valvatus (O.F. von Möllendorff,1897)
Cyclotus variegatus W.J. Swainson, 1840
Chamalycaeus varius H.A. Pilsbry & Y. Hirase,1905
Japonia vestita J.T. Kuroda, 1961
Cyclotus vicinus E.A. Smith, 1896
Boucardicus victorhernandezi K.C. Emberton, 2008
Spiraculum vilvensi (N.N. Thach & F. Huber,2017)
Chamalycaeus vinctus (H.A. Pilsbry, 1902)
Alycaeus virgogravida Foon & Liew, 2017
Cyathopoma vitreum R.H. Beddome, 1875
Leptopoma vitreum (R.P. Lesson, 1830)
Alycaeus volcani (W.T. Blanford, 1863)
Cyclophorus volvulus (O.F. Müller, 1774)
Japonia whiteheadi (E.A. Smith, 1887)
Ditropisena whitei (J.W. Brazier, 1874)
Ptychopoma wilsoni (L. Pfeiffer, 1865)
Cyclophorus woodianus H.C. Lea, 1841
Cyclophorus woodianus isabelanus P. Bartsch, 1939