Anisus baicalicus (W. Dybowski, 1913)
Gyraulus bakonicus (Halaváts, 1903)
Fuchsogyra balatonica (FOSSIL) K. Bandel, 2010 †
Anisus balizacensis (FOSSIL) (M.A. Peyrot, 1932 †)
Planorbarius barettii (FOSSIL) (F. Sacco, 1886 †)
Gyraulus barrackporensis S. Clessin, 1886
Biomphalaria barthi D.S. Brown, 1973
Choanomphalus bathybius J. Beckmann& Y.I. Starobogatov, 1975
Anisus bavaricus (C.A. Westerlund, 1885)
Bulinus bavayi P. Dautzenberg, 1894
Ferrissia bayacalifornica B. Walker, 1924
Bulinus beccarii A. Paladilhe, 1872
Gundlachia beddomei (Pettas)
Gyraulus bekaensis P. Glöer & U. Bössneck,2007
Biomphalaria belizensis (J.C.H. Crosse& P.H. Fischer, 1878)
Planorbarius belnensis (FOSSIL) (Tournouër, 1866) †
Lentorbis benguelensis (R.W. Dunker, 1845)
Gyraulus bicarinatus G. Mandahl-Barth, 1954
Gyraulus bigueti (C.F. Fontannes, 1881)
Gyraulus biwaensis (H.B. Preston, 1916)
Gyraulus blanfordi D.S. Brown, 1973
Kolhymorbis bogatovi F. Zatrawkin& I.M. Moskvicheva in F. Zatrawkin, 1985
Planorbis bolgradensis (FOSSIL) Prysjazhnjuk & Kovalenko,1986 †
Gyraulus bondartchuki (Prysjazhnjuk, 1974 )
Amerianna bonushenricus (A. Adams & G.F. Angas,1864)
Anisus borealis (S.L. Lovénin C.A. Westerlund, 1875)
Planorbarius borellii (FOSSIL) (Š. Brusina, 1892 †)
Planorbis bosqueti (FOSSIL) M. Glibert & De Heinzelin,1954 †
Biomphalaria boucardiana (H.B. Preston, 1907)
Planorbis bouei (FOSSIL) P.S. Pavlovic, 1932 †
Ancylus bourgeoisi (FOSSIL) G.P. Deshayes, 1863 †
Isidorella bradshawi T. Iredale, 1943
Isidorella brazieri (E.A. Smith, 1882)
Gyraulus brlici Š. Brusina, 1897
Menetus brogniartianus (H.C. Lea, 1842)