Bania globulina (FOSSIL) (Kókay, 2006 †)
Belgrandiella globulosa J. Bole, 1979
Islamia globulus (A. Bofill, 1919)
Islamia globulus agari (C. Altimira, 1960)
Anatolidamnicola gloeri S.K. Sahin, S.B. Koca& M.Z. Yildirim, 2012
Anatolidamnicola gloeri brevis S.K. Sahin, S.B. Koca& M.Z. Yildirim, 2012
Bythiospeum gloriae (E. Rolán& A. Martínez-Ortí, 2003)
Vinodolia gluhodolica (P. Radoman, 1973)
Hydrobia glyca (G. Servain, 1880)
Caspia gmelinii (S. Clessin & W. Dybowski,1887)
Bania gobanzi (FOSSIL) (G.R. von Frauenfeld,1864 †)
Pseudamnicola goksunensis P. Glöer, M.E. Gürlek& C. Kara, 2014
Austropyrgus goliathus A. Clark, W.B. Miller& W.F. Ponder, 2003
Baglivia goniogyra (FOSSIL) Š. Brusina, 1892 †
Bythiospeum gonostoma (D. Geyer, 1905)
Austropyrgus gordonensis A. Clark, W.B. Miller& W.F. Ponder, 2003
Micromelania gorianovici (FOSSIL) N.I. Andrusov, 1897 †
Orygoceras gorjanovici (FOSSIL) P.S. Pavlovic, 1926 †
Peringia gottscheana (FOSSIL) (A. von Koenen, 1883 †)
Bythiospeum goviense (D. Geyer, 1907)
Socenia graciliformis (FOSSIL) Papp, 1954 †
Pyrgula graciliformis (FOSSIL) Roshka, 1973 †
Iglica gracilis (S. Clessin, 1882)
Fluviopupa gracilis (T. Iredale, 1944)
Fluviopupa gracilis pupa T. Iredale, 1944
Hydrobia gracilis (FOSSIL) (H. Rolle, 1860 †)
Pyrgulopsis gracilis R. Hershler, 1998
Dianella gracilis (FOSSIL) (P.S. Pavlovic, 1903 †)
Micromelania gracilis (FOSSIL) Š. Brusina, 1892 †
Jekeliella gradata (FOSSIL) (A. Fuchs, 1870 †)
Pycnanema gradata (FOSSIL) Pan, 1980 †
Islamia graeca P. Radoman, 1973
Graecamnicola graeca (FOSSIL) (A. Fuchs, 1877 †)
Goniochilus graecus (FOSSIL) (W.A. Wenz, 1919 †)
Pseudotryonia grahamae F.G. Thompson, 2001