Turricaspia moquiana (FOSSIL) †
Islamia moquiniana (D. Dupuy, 1851)
Hydrobia morasensis (FOSSIL) C.F. Fontannes, 1883 †
Iberhoratia morenoi B. Arconada, D. Delicado& M.A. Ramos, 2007
Tournoueria morgani (FOSSIL) Š. Brusina 1870 †
Saganoa morimotoi J.T. Kuroda & T. Habe,1958
Pyrgulopsis morrisoni R. Hershler, 1988
Plagigeyeria mostarensis L. Kušcer, 1933
Bythiospeum moussonianum (A. Paladilhe, 1869)
Pseudamnicola moussonii (P. Calcara, 1841)
Hydrobia mucronata (FOSSIL) E. Jekelius, 1944 †
Belgrandiella multiformis W. Fischer & P.L. Reischütz,1995
Ginaia munda (R. Sturany, 1894)
Alzoniella murita H.D. Boeters, 2003
Kirelia murtici P. Radoman, 1973
Hydrobia musaensis G.R. von Frauenfeld, 1855
Graecoanatolica nageli (FOSSIL) P. Glöer & V.M. Pešic,2015 †
Fluviopupa nagodro S. Zielske & M. Haase,2014
Fluviopupa namosi S. Zielske & M. Haase,2014
Stiobia nana F.G. Thompson, 1978
Pyrgula nana B.M. Logvinenko& Y.I. Starobogatov, 1968
Saganoa nanatsugamaensis T. Habe, 1961
Hydrobia nannacus (FOSSIL) D. Kadolsky, 2008 †
Austropyrgus nanoacuminatus A. Clark, W.B. Miller& W.F. Ponder, 2003
Paxillostium nanum N.W. Gardner, 1970
Pyrgulopsis nanus R. Hershler & D.W. Sada,1987
Austropyrgus nanus A. Clark, W.B. Miller& W.F. Ponder, 2003
Fluviopupa narii M. Haase, Fontaine& O. Gargominy, 2010
Pseudocaspia narzikulovi (Z.I. Izzatullaev, 1972)
Pseudorientalia natolica (H.C. Küster, 1852)
Alzoniella navarrensis H.D. Boeters, 1999
Plesiella navarrensis H.D. Boeters, 2003
Corrosella navasiana (P. Fagot, 1907)
Falniowskia neglectissima (A. Falniowski& J. Steffek, 1989)
Pseudamnicola negropontina (S. Clessin)