Caspiohydrobia sogdiana Y.I. Starobogatov& Z.I. Izzatullaev, 1974
Horatia sokolovi Y.I. Starobogatov, 1962
Pyrgulopsis sola R. Hershler, 1988
Leiorhagium solemi M. Haase & P. Bouchet,1998
Austropyrgus solitarius A. Clark, W.B. Miller& W.F. Ponder, 2003
Alzoniella somiedoensis E. Rolán, B. Arconada& H.D. Boeters, 2009
Hydrobia soosi (A.J. Wagner, 1928)
Catapyrgus sororius M. Haase, 2008
Iglica soussensis M. Ghamizi & Bilal, 2017
Pyrgula sowinskyi B.M. Logvinenko& Y.I. Starobogatov, 1968
Austropyrgus sparsus (T. Iredale, 1944)
Turricaspia spasskii (B.M. Logvinenko& Y.I. Starobogatov, 1968)
Austropyrgus spectus A. Clark, W.B. Miller& W.F. Ponder, 2003
Catapyrgus spelaeus F.M. Climo, 1974
Pseudamnicola sphaerion (A. Mousson, 1863)
Texadina sphinctostoma (R.T. Abbott & H.S. Ladd,1951)
Turricaspia spica (K.E.I. von Eichwald,1855)
Hydrobia spicula (FOSSIL) Stefanescu, 1896 †
Baglivia spinata (FOSSIL) Lörenthey, 1895 †
Texadina spinctostoma (R.T. Abbott & H.S. Ladd,1953)
Lobogenes spiralis H.A. Pilsbry& J.C. Bequaert, 1927
Islamia spirata (R. Bernasconi, 1985)
Bracenica spiridoni P. Radoman, 1973
Schuettemmericia spoliata (FOSSIL) D. Kadolsky, 1993 †
Bania spreta (FOSSIL) (Š. Brusina, 1897 †)
Belgrandiella stanimirae D.G. Georgiev, 2011
Caspia stanislavi T.L. Alexenko& Y.I. Starobogatov, 1987
Lyhnidia stankovici S. Hadžišce, 1959
Ohrigocea stankovici (S. Hadžišce, 1959)
Micropyrgula stankovici (W. Polinski, 1929)
Neofossarulus stankovici (W. Polinski, 1929)
Turricaspia starobogatovi (FOSSIL) Roshka, 1973 †
Caspiohydrobia starobogatovi (FOSSIL) Iljina in Iljina & al.,1976 †
Pseudocaspia starostini Y.I. Starobogatov, 1972
Hydrobia stavropoliana (FOSSIL) Zhizhchenko, 1936 †