Filopaludina sumatrensis speciosa (G.P. Deshayes, 1876)
Viviparus sussexiensis (FOSSIL) (J. de C. Sowerby) †
Mekongia swainsoni (H.C. Lea, 1856)
Mekongia swainsoni braueri (W. Kobelt, 1908)
Mekongia swainsoni flavida R.A.M. Brandt
Mekongia swainsoni kmeriana (G. von dem Busch, 1844)
Viviparus symeonidisi (FOSSIL) Schütt, 1986 †
Viviparus syzranicus (FOSSIL) (Pavlov, 1925 †)
Paludina takliensis (FOSSIL) Hislop, 1859 †
Lioplax talquinensis V.A. Vail, 1979
Bellamya tanganyicense (E.A. Smith, 1880)
Campeloma tannum N.T. Mattox, 1940
Viviparus tardyanus (FOSSIL) É.A.A. Locard, 1883 †
Viviparus tetracarinatus (FOSSIL) Atanackovic, 1959 †
Viviparus texana G.W. Tryon, 1862
Taia theobaldi (W. Kobelt, 1909)
Angulyagra thersites (L.A. Reeve, 1863)
Paludina thomsoni L.J. Morlet, 1885
Paludina tiranti L.J. Morlet, 1885
Viviparus tohanensis (FOSSIL) Lubenescu & Zazuleac,1985 †
Viviparus tomici (FOSSIL) Š. Brusina, 1902 †
Viviparus trakanici (FOSSIL) Popovic, 1970 †
Viviparus transitorius (FOSSIL) (Stefanescu, 1889 †)
Viviparus treffortensis (FOSSIL) Delafond & Depéret,1893 †
Notopala tricincta (E.A. Smith, 1882)
Viviparus tricinctus Y.Y. Liu, W.Z. Zhang& Y.X. Wang, 1994
Paludina tricostata R.P. Lesson, 1831
Bellamya trochlearis E.C. Von Martens, 1892
Trochotaia trochoides (E.C. Von Martens, 1860)
Margarya tropidophora (J.F. Mabille, 1886)
Viviparus tuberculatus (FOSSIL) Berdnikova, 1977 †
Viviparus tumidus (FOSSIL) Stefanescu, 1896 †
Mekongia turbinata G.P. Deshayes, 1876
Viviparus turgidus (FOSSIL) (E.A. Bielz, 1864 †)
Popovicia turriculoidea (FOSSIL) (Popovic, 1964 †)