Truncatellina molecula (W.L.H. Dohrn, 1869)
Negulus molokaiensis C.M. Cooke & H.A. Pilsbry,1920
Truncatellina monodon (F. Held, 1837)
Nesopupa mooreana (E.A. Smith, 1894)
Nesopupa moreleti (A.D. Brown, 1870)
Nesopupa morini E.H. Madge
Nesopupa morini (E.C. Von Martens, 1898)
Vertigo morsei V. Sterki, 1894
Vertigo moulinsiana (D. Dupuy, 1849)
Vertigo murchisonae (FOSSIL) Moore †
Truncatellina mutandaensis (H.B. Preston, 1913)
Ptychalaea mystica (FOSSIL) Stworzewicz& B.M. Pokryszko, 2015 †
Truncatellina naivashensis (H.B. Preston, 1911)
Vertigo nangaparbatensis B.M. Pokryszko, K. Auffenberg& al., 2009
Nesoropupa nathaliae O. Gargominy, 2008
Vertigo neglecta R. Arango in F. Poey,1856
Nesopupa newcombi (L. Pfeiffer, 1853)
Truncatellina ninagongensis (H.A. Pilsbry, 1935)
Truncatellina ninagongonis (H.A. Pilsbry, 1935)
Vertigo nitens W.H. Pease, 1861
Vertigo nitidula (A. Mousson, 1876)
Nesopuparia norfolkensis (E.R. Sykes, 1900)
Vertigo nouleti (FOSSIL) Michaud, 1862 †
Nesopupa novopommerana B. Rensch, 1932
Vertigo nylanderi V. Sterki, 1909
Columella nymphaepratensis B.M. Pokryszko, K. Auffenberg& al., 2009
Nesopupa oahuensis C.M. Cooke & H.A. Pilsbry,1920
Vertigo occidentalis V. Sterki, 1907
Vertigo ocsensis (FOSSIL) (Halaváts, 1903) †
Vertigo oecsensis (FOSSIL) (Halaváts, 1903) †
Vertigo okinoerabuensis H.A. Pilsbry & Y. Hirase,1904
Columella olaaensis H.A. Pilsbry, 1926
Truncatellina opisthodon (O.W.H. Reinhardt, 1879)
Vertigo oralis V. Sterki, 1898
Pupisoma orcula (W.H. Benson, 1850)