Hydrobia brazieri E.A. Smith, 1882 Australia, Clarence River
Bythiospeum bressanum R. Bernasconi, 1985 Europe
Martensamnicola brevicula (E.C. Von Martens, 1874)
Goniochilus breviformis (FOSSIL) (Papp, 1953 †)
Pyrgulopsis breviloba R. Hershler, 1998 Nevada, Lincoln County
Fluviopupa brevior (C.M.F. Ancey, 1905) Vanuatu Island, New Hebrides
Graecoanatolica brevis P. Radoman, 1973 Turkey
Hadopyrgus brevis F.M. Climo, 1974 New Zealand
Avenionia brevis (J.P.R. Draparnaud, 1805) Spain
Avenionia brevis reyniesii (D. Dupuy, 1851) France
Kerkia brezicensis M. Bodon& S. Cianfanelli, 1996 Slovenia
Beddomeia briansmithi W.F. Ponder & K.B. Clark,1993 Tasmania, Dorset
Hydrobia brondeli J.R. Bourguignat, 1862 Algeria
Caspia brotzkajae Y.I. Starobogatov, 1992
Pyrgulopsis bruneauensis R. Hershler, 1990 USA, Idaho
Pseudohoratia brusinae (P. Radoman, 1953) Macedonia
Hydrobia brusinai (FOSSIL) W.A. Wenz, 1919 †
Andrusovia brusinai Y.I. Starobogatov, 2000 South Caspian Sea
Pseudodianella brusinai (FOSSIL) (J.R. Tournouër, 1875 †)
Pseudodianella brusinai (FOSSIL) (Willmann, 1981 †)
Pseudamnicola brusiniana (S. Clessin& W. Dybowski in W. Dybowski, 1888) Turkmenistan
Pyrgulopsis bryantwalkeri R. Hershler, 1994 Nevada, Elko County
Hydrobia buccinoides J.R.C. Quoy& J.P. Gaimard, 1835 Tasmania
Maeotidia bucculenta (FOSSIL) N.I. Andrusov, 1890 †
Austropyrgus buchanensis A. Clark, W.B. Miller& W.F. Ponder, 2003 Australia, Gippsland
Bucharamnicola bucharica (V.I. Zhadin, 1952)
Prososthenia budusi (FOSSIL) E. Jekelius, 1932 †
Salakosia bukowskii (FOSSIL) Willmann, 1981 †
Fluviopupa bula S. Zielske & M. Haase,2014
Belgrandiella bulgarica A.M. Angelov, 1972 Bulgaria, Stara Planina Mount
Sadleriana bulgarica (A.J. Wagner, 1928) Bulgaria
Gloeria bulgarica D.G. Georgiev, I. Dedov& Varadinova, 2012 Bulgaria, Sredna Gora
Radomaniola bulgarica P. Glöer & D.G. Georgiev,2009 Bulgaria
Kolevia bulgarica D.G. Georgiev & P. Glöer,2015 Bulgaria
Austropyrgus bullerensis A. Clark, W.B. Miller& W.F. Ponder, 2003 Australia, Mansfield