Cancellaria isabelae (FOSSIL) B.M. Landau & al., 2012 †
Aphera islacolonis (FOSSIL) C.J. Maury, 1917 †
Nipponaphera iwaotakii T. Habe, 1961
Bonellitia jacksonica (FOSSIL) Cooke, 1926 †
Plesiotriton jacquesponsi (FOSSIL) J.M. Pacaud, Ledon& Loubry, 2015 †
Massyla jadisi (FOSSIL) A.A. Olsson, 1964 †
Cancellaria jakobseni (FOSSIL) Schnetler, 2001 †
Tritonoharpa janowskyi E.J. Petuch & D.M. Sargent,2011
Neadmete japonica (E.A. Smith, 1879)
Cancellaria jayana A.M. Keen, 1958
Fusiaphera jenkinsi (FOSSIL) P.A. Maxwell, 1992 †
Cancellaria jijipana (FOSSIL) H.A. Pilsbry& A.A. Olsson, 1941 †
Inglisella jocosa (FOSSIL) P.A. Maxwell, 1988 †
Microcancilla jonasi J.C.N. Barros & R.E. Petit,2007
Sveltia jonkairiana (P. Nyst, 1835)
Mericella jucunda (K.H.J. Thiele, 1925)
Marksella jumala (FOSSIL) A.A. Olsson, 1964 †
Cancellaria juncta (FOSSIL) P.O. Jung & R.E. Petit,1990 †
Cancellaria jungi (FOSSIL) B.M. Landau & R.E. Petit,1997 †
Brocchinia kaiensis A. Verhecken, 1997
Scalptia kaiparaensis (FOSSIL) (C.R. Laws, 1939 †)
Kapuatriton kaitarus (FOSSIL) A.G. Beu & P.A. Maxwell,1987 †
Microsveltia karubar A. Verhecken, 1997
Fusiaphera kassitiana (FOSSIL) J.M. Pacaud, Ledon& Loubry, 2015 †
Nipponaphera kastoroae (A. Verhecken, 1997)
Iphinopsis kelseyi (W.H. Dall, 1908)
Trigonostoma kilburni R.E. Petit& M.G. Harasewych, 2000
Africotriton kilburni A.G. Beu & P.A. Maxwell,1987
Cancellaria kimikoae (FOSSIL) K.M. Hatai, 1940 †
Merica kobayashii (FOSSIL) (M. Yokoyama, 1927 †)
Iphinopsis kulanda (T.A. Garrard, 1975)
Zeadmete kumeroa (FOSSIL) C.A. Fleming, 1943 †
Pyruclia lacondamini (FOSSIL) A.A. Olsson, 1964 †
Sydaphera lactea (G.P. Deshayes, 1830)
Bonellitia lacunosa (FOSSIL) (F.W. Hutton, 1885 †)