Clavatula caerulea (H.C. Weinkauff in H.C. Weinkauff& W. Kobelt, 1875)
Clavatula calcarata (FOSSIL) (J.P.S. Grateloup,1840 †)
Clavatula calcarata francisci (FOSSIL) F. Toula, 1910 †
Clavatula camillae (FOSSIL) Hoenes & M. Auinger,1891 †
Clavatula cancellata (FOSSIL) Sowerby, 1827 †
Clavatula capgrandi (FOSSIL) (R. Tournouer, 1874 †)
Clavatula capgrandi raouli (FOSSIL) M.A. Peyrot, 1931 †
Clavatula carinifera (FOSSIL) J.P.S. Grateloup, 1832 †
Clavatula carinulata (FOSSIL) F. Sacco, 1890 †
Surcula carpenteriana W.M. Gabb, 1865
Tropisurcula caseyi (FOSSIL) (T.H. Aldrich, 1903 † †)
Clavatula castanea J. Brown, 1827
Turricula catena (L.A. Reeve, 1843)
Turricula catenata (FOSSIL) G.P. Deshayes, 1865 †
Turricula ceylonica (E.A. Smith, 1877)
Clavatula chiriquiensis (FOSSIL) A.A. Olsson, 1922 †
Clavatula christianae F. Nolf, 2011
Eodrillia cingula (FOSSIL) Garvie, 2013 †
Gemmuloborsonia clandestina N. Puillandre, Cruaud& Y.I. Kantor, 2010
Turricula coislinensis (FOSSIL) A.E.M. Cossmann, 1898 †
Clavatula colini H. von Maltzan, 1883
Gemmuloborsonia colorata (A.V. Sysoev & P. Bouchet,2001)
Pusionella compacta H. Strebel, 1914
Clavatula compsa (FOSSIL) J. Gardner, 1937 †
Clavatula concatenata (FOSSIL) (J.P.S. Grateloup,1832 †)
Clavatula concinnata (FOSSIL) Wood, 1848 †
Clionella confusa E.A. Smith, 1906
Clavatula congoensis F. Nolf & J. Verstraeten,2008
Clivunella conica (FOSSIL) Gorjanovic-Kramberger,1923 †
Turricula consobrina (FOSSIL) L.M.D. Bellardi, 1877 †
Makiyamaia coreanica (A. Adams & L.A. Reeve,1850)
Makiyamaia coreanica okinavensis (FOSSIL) F.S. MacNeil, 1960 †
Clavatula cornelliana (FOSSIL) A.A. Olsson, 1916 †
Makiyamaia cornulabrum J.T. Kuroda, 1961
Clavatula coronata J.B.P.A. Lamarck, 1801