Trochus transenna C. Linnaeus, 1758
Clanculus tricarinata J.B.P.A. Lamarck, 1822
Trochus tricarinatus (FOSSIL) Klipstein, 1843 †
Trochus tricatenatus L.A. Reeve, 1861
Austrocochlea tricingulata (A. Adams, 1853)
Clanculus tricingulatus (FOSSIL) N.H. Ludbrook, 1978 †
Jujubinus trilloi C. Smriglio, A. Di Giulio& P. Mariottini, 2014
Austrocochlea trochlea (W. Wood, 1828)
Conotalopia tropicalis (C. Hedley, 1907)
Gibbula tryoni H.A. Pilsbry, 1889
Microtis tuberculata H. Adams & A. Adams, 1850
Gibbula tumida (G. Montagu, 1803)
Jujubinus tumidulus (A. Aradas, 1846)
Phorcus turbinatus (I. von Born, 1778)
Gibbula turbinoides (G.P. Deshayes, 1835)
Cantharidus turneri (A.W.B. Powell, 1939)
Gibbula umbilicalis (E.M. Da Costa, 1778)
Gibbula umbilicaris (C. Linnaeus, 1758)
Gibbula umbilicaris latior T.A. de M. Monterosato,1878
Gibbula umbilicaris nebulosa (R.A. Philippi, 1848)
Clanculus undatoides J.E. Tenison-Woods, 1879
Clanculus undatus (J.B.P.A. Lamarck, 1816)
Stomatella ungula (C. Hedley, 1907)
Pseudostomatella unicarinata J.T. Kuroda
Dimorphotectus unicarinatus (FOSSIL) J. Szabo, 1981 †
Jujubinus unidentatus (R.A. Philippi, 1844)
Cantharidus urbanus (A.A. Gould, 1861)
Gibbula vanwalleghemi G.T. Poppe, S.P. Tagaro& H. Dekker, 2006
Gibbula varia (C. Linnaeus, 1758)
Gibbula varia mocquerisi (P.M. Pallary, 1912)
Stomatella varia Adams, 1850
Monilea variabilis A. Adams, 1853
Oxystele variegata (H.E. Anton, 1838)
Fossarina variegata (A. Adams, 1855)
Fagnastesia venefica (FOSSIL) (R.A. Philippi, 1887 †)