Monilea callifera (J.B.P.A. Lamarck, 1822)
Callistele calliston (J.C. Verco, 1905)
Stomatella callosa (P. Fischer, 1871)
Monilea calyculus (W. Wood, 1828)
Trochus calyptraea (FOSSIL) (Salter) †
Trochus camelophorus W.H. Webster, 1906
Gibbula canaliculata E. Rolán & J. Templado,2001
Lirularia canaliculata (E.A. Smith, 1872)
Monodonta canalifera J.B.P.A. Lamarck, 1816
Trochus cancellatus (FOSSIL) Seeley †
Gibbula candei (A.V.M.D. D'Orbigny,1844)
Charisma candida (C.B. Adams, 1861)
Gibbula capensis (J.F. Gmelin, 1791)
Stomatella capieri G.T. Poppe, S.P. Tagaro& H. Dekker, 2006
Cantharidus capillaceus (R.A. Philippi, 1849)
Ethaliella capillata (A.A. Gould, 1861)
Charisma carinata (J.C. Verco, 1907)
Monodonta carinata (FOSSIL) (S. Borson, 1821 †)
Coelotrochus carinatus (B.A. Marshall, 1998)
Trochus cariniferus L.A. Reeve, 1842
Coelotrochus carmesinus (W.H. Webster, 1908)
Ethalia carneolata (J.C. Melvill, 1897)
Jujubinus catenatus R. Ardovini, 2006
Ethalia catharinae G.T. Poppe, S.P. Tagaro& H. Dekker, 2006
Trochus caumontii (FOSSIL) Klipstein, 1843 †
Monilea celebensis M.M. Schepman, 1908
Clanculus cerberi (FOSSIL) A. Brongniart, 1823 †
Clanculus ceylonicus G. Nevill & H. Nevill,1869
Umbonium chalconotum A. Adams, 1854
Coelotrochus chathamensis (F.W. Hutton, 1873)
Coelotrochus chathamensis dunedinensis (H.H. Suter, 1897)
Monilea chiliarches J.C. Melvill, 1910
Prothalotia chlorites (R.A. Philippi, 1846)
Infundibulum chloromphalus A. Adams, 1851
Odontotrochus chlorostoma (K.T. Menke, 1843)