Theodoxus denisluensis (FOSSIL) (P. Oppenheim, 1919 †)
Theodoxus deperditus (FOSSIL) (J. Almera, 1894 †)
Theodoxus djedida T. Kira, 1955
Theodoxus doderleini (FOSSIL) d'Ancona, 1869 †
Theodoxus doingii (C.A. Récluz, 1846)
Theodoxus doricus (FOSSIL) (M. von Neumayr, 1880 †)
Theodoxus dumortieri (FOSSIL) (C.F. Fontannes, 1878 †)
Theodoxus elongatulus (P.M.A. Morelet, 1845)
Theodoxus elongatus P.M.A. Morelet, 1845
Theodoxus elongatus (FOSSIL) (Thomä, 1845 †)
Theodoxus eugenii (FOSSIL) E. Jekelius, 1944 †
Theodoxus euxinus S. Clessin, 1885
Theodoxus fasciatus (FOSSIL) Gozhik in Gozhik& Datsenko, 2007 †
Theodoxus fisheri (FOSSIL) Arkell †
Theodoxus fluviatilis (C. Linnaeus, 1758)
Theodoxus fluviatilis thermalis (N. Boubee, 1833)
Theodoxus fontaineana D'Orbigny, 1840
Theodoxus fulminiferus (FOSSIL) (C.L.F. von Sandberger †)
Theodoxus gloeri D.A. Odabasi & Arslan,2015
Theodoxus gnezdai (FOSSIL) (Š. Brusina, 1884 †)
Theodoxus grateloupianus (FOSSIL) (A.E.J. Férussac, 1823 †)
Theodoxus gregarius (FOSSIL) (Thomä, 1845 †)
Theodoxus groyanus (FOSSIL) (A.E.J. Férussac, 1823 †)
Theodoxus guadianensis M.de la Paz Graells, 1846
Theodoxus heldreichi (E.C. Von Martens, 1879)
Theodoxus hellenicus (FOSSIL) (Bukowski, 1896 †)
Theodoxus hisingeri (FOSSIL) (L.M.D. Bellardi& O.G. Michelotti, 1841 †)
Theodoxus hispalensis (E.C. Von Martens, 1879)
Theodoxus hoernesanus (FOSSIL) (C.G. Semper, 1867 †)
Theodoxus imbricatus (FOSSIL) (Š. Brusina, 1878 †)
Theodoxus ingulenzis (FOSSIL) Gozhik in Gozhik& Datsenko, 2007 †
Theodoxus intracarpaticus (FOSSIL) E. Jekelius, 1944 †
Theodoxus jekeliusi (FOSSIL) Jurišic-Polšak, 1979 †
Theodoxus jordani G.B. I Sowerby, 1844