Falsipyrgula bakhtarana H. Schütt & A.B. Mansoorian,2000
Pyrgula bakuana (C.M. Kolesnikov, 1947)
Jekeliella balatonica (FOSSIL) (H. Rolle, 1862 †)
Pseudoislamia balcanica P. Radoman, 1979
Mercuria balearica (A. Paladilhe, 1870)
Hydrobia balfouri (H.H. Godwin-Austen,1881)
Guadiella ballesterosi D.M. Alba, A. Tarruella, L. Prats, J. Corbella& G. Guillén, 2009
Hydrobia baltici (FOSSIL) Š. Brusina, 1902 †
Islamia bambolii D. Esu & O. Girotti, 2015
Hydrobia banatica (FOSSIL) E. Jekelius, 1944 †
Goniochilus banaticus (FOSSIL) (Š. Brusina, 1881 †)
Corrosella bareai (D. Delicado, Machordom& M.A. Ramos, 2012)
Pseudamnicola barratei A. Letourneux& J.R. Bourguignat, 1887
Texadina barretti (J.P.E. Morrison, 1965)
Falsipyrgula barroisi (P. Dautzenberg, 1894)
Hydrobia barzaviae (FOSSIL) E. Jekelius, 1932 †
Pyrgula basalis (W. Dybowski& J.G. Grochmalicki, 1915)
Caspia basicarinata (FOSSIL) Roshka, 1973 †
Pyrgulopsis basiglans R. Hershler, 1998
Hydrobia bathyomphala (FOSSIL) Š. Brusina, 1902 †
Odontohydrobia bathyomphalus (FOSSIL) P.S. Pavlovic, 1927 †
Mercuria baudoniana (J. Gassies, 1859)
Sadleriana bavarica H.D. Boeters, 1989
Nematurella bavarica (FOSSIL) (C.L.F. von Sandberger,1875 †)
Mercuria bayonnensis (É.A.A. Locard, 1894)
Staja bchirikvarensis (FOSSIL) (Badzoshvili, 1979 †)
Bythiospeum bechevi D.G. Georgiev & P. Glöer,2013
Pseudamnicola beckmanni P. Glöer & M.L. Zettler,2007
Pyrgulopsis bedfordensis R. Hershler& D.L. Gustafson, 1999
Pyrgula behningi B.M. Logvinenko& Y.I. Starobogatov, 1968
Caspiohydrobia behningi Y.I. Starobogatov& S.I. Andreeva, 1981
Microprososthenia belchatovensis (FOSSIL) D. Kadolsky & Piechocki,2000 †
Petterdiana bellii (W.F. Petterd, 1889)
Tournouerina belnensis (FOSSIL) (Delafond & Depéret,1893) †
Islamia bendidis P.L. Reischütz, 1988