Mercuria gauthieri P. Glöer, S. Bouzid& H.D. Boeters, 2010
Bythiospeum gebharti H. Wagner, 1931
Pontohydrobia gedjirica (FOSSIL) Badzoshvili, 1979 †
Pseudamnicola geldiayana H. Schütt, 1970
Caspiohydrobia gemmata (C.M. Kolesnikov, 1947)
Pseudamnicola georgievi P. Glöer & V.M. Pešic,2012
Pseudamnicola gerannensis (FOSSIL) R. Rey, 1974 †
Probaicalia gerassimovi (FOSSIL) (Reis, 1910 †)
Pseudamnicola gerhardfalkneri P. Glöer, S. Bouzid& H.D. Boeters, 2010
Islamia germaini H.D. Boeters & G. Falkner,2003
Staja gersondei (FOSSIL) (Willmann, 1982 †)
Bythiospeum geyeri (A. Fuchs, 1925)
Belgrandia gfrast M. Haase, 2000
Pseudamnicola ghamizii P. Glöer, S. Bouzid& H.D. Boeters, 2010
Belgrandia gibba (J.P.R. Draparnaud, 1805)
Hydrobia gibba (FOSSIL) (A. Braun in Walchner,1851 †)
Pyrgulopsis gibba R. Hershler, 1995
Belgrandia gibberula A. Paladilhe, 1869
Bythiospeum gibbulum (K. Flach, 1886)
Pyrgulopsis gilae (D.W. Taylor, 1987)
Austropyrgus gippslandicus W.F. Ponder, D.J. Colgan, A. Clark, W.B. Miller& T. Terzis, 1994
Hydrobia girondica (FOSSIL) Boettgerin Degrange-Touzin, 1892 †
Iglica gittenbergeri A. Reischütz& P.L. Reischütz, 2008
Pyrgulopsis giuliani R. Hershler & W.L. Pratt,1990
Iglica giustii M. Bodon & Giovannelli,1995
Lyhnidia gjorgjevici S. Hadžišce, 1959
Plagigeyeria gladilini L. Kušcer, 1937
Pyrgula gladilini (FOSSIL) P.S. Pavlovic, 1932 †
Goniochilus glandulinus (FOSSIL) (F. Stoliczka, 1862 †)
Pyrgulopsis glandulosa R. Hershler, 1988
Hydrobia glaucovirens (J.C. Melvill& J.H. Ponsonby, 1896)
Austropyrgus glenelgensis A. Clark, W.B. Miller& W.F. Ponder, 2003
Caldicochlea globosa (W.F. Ponder, D.J. Colgan, T. Terzis& K.B. Clark, 1995)
Saccoia globosa (FOSSIL) M. Harzhauser & al.,2015 †
Mercuria globulina (A. Letourneux& J.R. Bourguignat, 1887)