Neritina imitans (FOSSIL) E.A.L. Kittl, 1892 †
Nerita incerta (G. von dem Buschin R.A. Philippi, 1844)
Ritena incurva E.C. Von Martens
Theodoxus ingulenzis (FOSSIL) Gozhik in Gozhik& Datsenko, 2007 †
Nerita insculpta C.A. Récluz, 1841
Neritina insolita (FOSSIL) L.W. Stephenson, 1953 †
Theodoxus intracarpaticus (FOSSIL) E. Jekelius, 1944 †
Neritina isabelae (FOSSIL) B.M. Landau, F. Da Silva& S.M. Heitz, 2016 †
Septaria janelli (C.A. Récluz, 1841)
Neritina janetabbasae Eichhorst, 2016
Januncia janus (FOSSIL) R.L. Squires & Saul,2003 †
Nerita japonica R.W. Dunker, 1860
Neritodryas javanica Eichhorst, 2016
Theodoxus jekeliusi (FOSSIL) Jurišic-Polšak, 1979 †
Smaragdia jogjacartensis (FOSSIL) K. Martin, 1916 †
Theodoxus jordani G.B. I Sowerby, 1844
Vittina jovis (C.A. Récluz, 1843)
Neritina jungi (FOSSIL) Costa & al., 2001 †
Neritina juttingae H.K. Mienis, 1973
Neritina kaffra (W. Wood, 1828)
Theodoxus kalodictya (FOSSIL) (N.I. Andrusov, 1909 †)
Theodoxus karasuna A. Mousson
Otostoma kassenbergensis (FOSSIL) S. Kiel & K. Bandel,2004 †
Theliostyla kennedyi (FOSSIL) R.L. Squires & Saul,2003 †
Theodoxus koslinskyi (FOSSIL) (Porumbaru, 1881 †)
Vitta kuramoensis V.L.A. Yoloye& O.S. Adegoke, 1977
Neritina labiosa G.B. I Sowerby, 1825
Theodoxus lamellatus (FOSSIL) (Š. Brusina, 1892 †)
Septaria laperousei C.A. Récluz, 1842
Neritina latissima W.J. Broderip, 1833
Neritina latissima cassiculum (G.B. I Sowerby, 1836)
Neritina latissima fontaineanum (A.V.M.D. D'Orbigny,1840)
Clithon leachii (C.A. Récluz, 1841)
Neripteron lecontei (C.A. Récluz, 1853)
Clithon lentiginosus (L.A. Reeve, 1855)