Bythinella serborientalis P. Radoman, 1978 Yugoslavia
Bythinella servainiana (A. Paladilhe, 1870) France
Bythinella simoniana (A. Moquin-Tandon, 1856) Cerbere, France
Bythinella sirbui P. Glöer, 2013 Romania
Bythinella slaveyae P. Glöer & D.G. Georgiev,2011 Bulgaria
Bythinella smolyanica P. Glöer & D.G. Georgiev,2011 Bulgaria
Bythinella sordida (H.C. Küster, 1853)
Bythinella srednogorica P. Glöer & D.G. Georgiev,2009 Bulgaria, Sredna Gora
Bythinella stoychevae D.G. Georgiev, 2011 Bulgaria, Rhodope Mountains1,5 mm
Bythinella strandzica P. Glöer & D.G. Georgiev,2011
Bythinella syntriculus H.D. Boeters& G. Falkner, 2008 France
Bythinella szarowskae P. Glöer, 2013 Romania
Bythinella taraensis P. Glöer & V.M. Pešic,2010 Montenegro
Bythinella temelkovi D.G. Georgiev & P. Glöer,2014 Bulgaria, Strandzha Mts.2,5 mm
Bythinella thermophila P. Glöer, A. Varga& Mrkvicka, 2015 Hungary
Bythinella tornensis (G.R. von Frauenfeld,1856)
Bythinella trinitatensis E. Caziot, 1910
Bythinella troyana R. Bernasconi, 2000 Cerbere, France
Bythinella turca P. Radoman, 1976 Turkey
Bythinella turriculata (A. Paladilhe, 1869) Cerbere, France
Bythinella ullaensis H.D. Boeters& G. Falkner, 2008 France
Bythinella utriculus (A. Paladilhe, 1874) France
Bythinella valkanovi P. Glöer & D.G. Georgiev,2011 Bulgaria
Bythinella vasseuri H. Girardi, 2009 France
Bythinella vedovi P. Glöer & D.G. Georgiev,2011
Bythinella vesontiana (R. Bernasconi, 1989) Europe
Bythinella vimperei R. Bernasconi, 2000 Cerbere, France
Bythinella viridis (J.L.M. Poiret, 1801) France
Bythinella viseuiana A. Falniowski, M. Szarowska& I. Sirbu, 2009 Romania
Bythinella vitrellaeformis (FOSSIL) Lörenthey, 1902 †
Bythinella walensae Falniowski, Hofman& Rysiewska, 2016 Greece, Cyclades
Bythinella walkeri P. Glöer & D.G. Georgiev,2009 Bulgaria
Bythinella wantanensis (Z. Kang, 1983)
Bythinella wawrzineki R. Bernasconi, 2002 Cerbere, France
Bythinella wilkei M.Z. Yildirim, Ü. Kebapçi& A. Yüce, 2014 Turkey, Kartepe2,8 mm