Adamsiella jarvisi J. Henderson, 1901 Jamaica12 mm
Chondropoma jaulense C. de la Torre& P. Bartsch, 1938 Cuba
Tudora jayana (C.B. Adams, 1849) Jamaica
Subannularia jeannereti (L. Pfeiffer, 1861) Cuba
Troschelvindex jiguanensis (L. Pfeiffer, 1861) Cuba
Eutudora jimenoi (R. Arango in L. Pfeiffer, 1864) Cuba14 mm
Leonia jolyi (P.M. Pallary, 1908) Morocco, cap Cantin22,6 mm
Leonia jolyi boiteli (P.M. Pallary, 1927) Morocco, cap Cantin18 mm
Cyclotopsis josephinae (K.C. Emberton, 2003) Madagascar
Pomatias jousseaumianum J.F. Mabille, 1886 Madagascar
Parachondria joyeuse Watters, 2016
Opisthosiphon judasense C. de la Torre& J. Henderson, 1920 Cuba
Tropidophora juliana E. Fischer-Piette& J. Bedoucha, 1965 Madagascar
Chondropoma julieni L. Pfeiffer, 1866 Virgin Islands, Anguilla
Palaeocyclotus kuehschelmi (FOSSIL) M. Harzhauser& T.A. Neubauer, 2016 † Oman
Chondropomium kusteri (L. Pfeiffer, 1851) Belize
Licina labeo (O.F. Müller, 1774) Jamaica
Subannularia lacheri (L. Pfeiffer, 1861) Cuba
Chondropoma laetum (Gutiérrez in F. Poey,1858) Cuba13 mm
Pomatias laevigata (P.B. Webb& S. Berthelot, 1833) Canary Islands15,6 mm
Procyclotopsis laevigatus (FOSSIL) (F. Sandberger, 1870) †
Wrightudora laevistria C.G. Aguayo& M.I. Sánchez Roig, 1949 Cuba
Lagopoma lagopoma P. Bartsch, 1946 Dominican Republic
Cubadamsiella lamellata L.O. Alcalde, 1945 Cuba10 mm
Opisthocoelicum lamellicostatum (C. de la Torre& J. Henderson, 1921) Cuba
Opisthosiphon lamellosum C. de la Torre& P. Bartsch, 1941 Jamaica
Pomatias lanzarotensis (T.V. Wollaston, 1878) Canary Islands, Fuerteventura14 mm
Choanopoma largillierti (L. Pfeiffer, 1842) Mexico, Yucatan14 mm
Cyclostoma lartetii (FOSSIL) Noulet, 1851 † France, Aquitaine
Chondropometes latilabre (A.V.M.D. D'Orbigny,1842) Cuba24,9 mm
Chondropoma latum (J. Gundlach in L. Pfeiffer, 1858) Cuba
Chondropoma lembeyi C. de la Torre& P. Bartsch, 1938 Cuba
Cubadamsiella leoni (C. de la Torre& P. Bartsch, 1941) Cuba
Chondropoma leoni C. de la Torre& P. Bartsch, 1938 Cuba
Tropidophora lienardi (P.M.A. Morelet, 1877) Mauritius