Alvania tenhovei H.J. Hoenselaar & J. Goud,1998
Alvania tenuicostata (G. Seguenza, 1876)
Gofasia tenuicula S. Gofas, 2007
Rissoa tenuilineata (FOSSIL) (A.E.M. Cossmann, 1921 †)
Powellisetia tenuisculpta (A.W.B. Powell, 1933)
Pusillina tenuisculpta (FOSSIL) (C.R. Laws, 1950 †)
Setia tenuisculpta (FOSSIL) (R.B. Watson, 1873 †)
Onoba tenuistrata A.N. Golikov, V.V. Gulbin& B.I. Sirenko, 1987
Onoba tenuistriata (A.W.B. Powell, 1933)
Onoba tenuistriata A.N. Golikov, V.V. Gulbin& B.I. Sirenko, 1987
Alvania tepeeformis (FOSSIL) A.W. Grabau, 1931 †
Alvania tessellata G. Schwartzin H.C. Weinkauff, 1868
Merelina tessellata (G. Schwartz, 1860)
Alvania testae (A. Aradas & G. Maggiore,1844)
Pusillina testudae (A. Verduin, 1979)
Rissoa texana (FOSSIL) Stanton, 1947 †
Rissoa texta (FOSSIL) A. Borchert, 1901 †
Frigidoalvania thalassae P. Bouchet & A. Warén,1993
Alvania thalia (FOSSIL) C. De Stefani& D. Pantanelli, 1888 †
Manzonia thomensis E. Rolán & C. Fernández,1990
Alvania thouinensis (K.H.J. Thiele, 1925)
Koskinakra thracica (FOSSIL) M. Harzhauser, O. Mandic& al., 2016 †
Ovirissoa tiara (W.L. May, 1915)
Alvania tiarula A. Adams, 1861
Voorwindia tiberiana (A. Issel, 1869)
Galeodinopsis tiberiana (Coppi, 1876)
Merelina tokunagai (M. Yokoyama, 1927)
Simulamerelina tokyoensis (H.A. Pilsbry, 1904)
Alvania tomentosa (P.M. Pallary, 1920)
Haurakia tomlini J.M.R.M. Viader, 1938
Onoba torelli A. Warén, 1996
Rissoa torquilla P.M. Pallary, 1912
Alvania townsendi (J.C. Melvill, 1910)
Rissoa trabeata (FOSSIL) N.E. Weisbord, 1962 †
Obtusella trachealis (A.A. Gould, 1861)