Hydrobia inflata (FOSSIL) (G.G. Pusch, 1837 †)
Pseudamnicola inflata (FOSSIL) E. Jekelius, 1944 †
Beddomeia inflata W.F. Ponder & K.B. Clark,1993
Trochidrobia inflata W.F. Ponder, R. Hershler& B.W. Jenkins, 1989
Pyrgulopsis inopinata R. Hershler, 1998
Taylorconcha insperata R. Hershler, 2006
Cincinnatia integra (T. Say, 1821)
Pyrgulopsis intermedia (G.W. Tryon, 1865)
Turricaspia intermedia (FOSSIL) (N.I. Andrusov, 1902 †)
Pyrgula interrupta (FOSSIL) Š. Brusina, 1878 †
Orygoceras intortum (FOSSIL) Š. Brusina, 1902 †
Pseudamnicola intranodosa H. Schütt & R. Sesen,1993
Belgrandia ionica (H. Schütt, 1980)
Nematurella irenae (FOSSIL) W.R. Schlickum, 1964 †
Fluviopupa irinimeke M. Haase, W.F. Ponder& P. Bouchet, 2006
Lapparentia irregularis (FOSSIL) (G.P. Deshayes, 1862 †)
Corrosella iruritai (D. Delicado, Machordom& M.A. Ramos, 2012)
Sardohoratia islamioides G. Manganelli, M. Bodon& al., 1998
Sardohoratia islamoides G. Manganelli, M. Bodon& al., 1998
Turricaspia ismailensis (A.N. Golikov& Y.I. Starobogatov, 1966)
Pseudopaludinella ismailensis V.V. Anistratenko, 1992
Pyrgulopsis isolata R. Hershler & D.W. Sada,1987
Pyrgula isseli B.M. Logvinenko& Y.I. Starobogatov, 1968
Pseudocaspia issykkulensis (S. Clessin, 1894)
Goniochilus italicus (FOSSIL) (N.I. Andrusov, 1890 †)
Pyrgohydrobia jablanicensis P. Radoman, 1955
Hauffenia jadertina L. Kušcer, 1933
Kerkia jadertina (Kušcer, 1933)
Maeotidia jalpuhensis (FOSSIL) (Roshka, 1973 †)
Bythiospeum jazzi D.G. Georgiev & P. Glöer,2013
Fluviopupa jeanyvesi M. Haase, O. Gargominy& Fontaine, 2005
Jardinella jesswiseae W.F. Ponder & K.B. Clark,1990
Caspiohydrobia johanseni E.N. Frolova, 1984
Islamia jordanica (FOSSIL) Alhejoj & K. Bandel,2013 †
Belgrandia jordaoi G. Holyoak, D. Holyoak& da Costa Mendes, 2017