Drillia cocosina (FOSSIL) A.A. Olsson, 1922 †
Clavus coffea (E.A. Smith, 1882)
Syntomodrillia collarubra (FOSSIL) McNeil, 1984 †
Drillia collina K.H. Barnard, 1958
Clathrodrillia colombiana P.J. Fallon, 2016
Decoradrillia colorea P.J. Fallon, 2016
Splendrillia compta P.J. Fallon, 2016
Drillia concolor E.A. Smith, 1877
Spirotropis confusa (G. Seguenza, 1880)
Drillia connelli R.N. Kilburn, 1988
Drillia consors (FOSSIL) Sowerby, 1850 †
Drillia continua J.C. Melvill & R. Standen,1903
Fenimorea contracta P.J. Fallon, 2016
Kylix contracta J.H. McLean & L.H. Poorman,1971
Leptadrillia cookei (E.A. Smith, 1888)
Drillia corusca L.A. Reeve, 1843
Drillia coryphodes (FOSSIL) J. Gardner, 1937 †
Drillia costaria (FOSSIL) (G.P. Deshayes †)
Plagiostropha costata F.E. Wells, 1995
Calliclava craneana (L.G. Hertlein& A.M. Strong, 1951)
Neodrillia crassa P.J. Fallon, 2016
Splendrillia crassiplicata (J.T. Kuroda, T. Habe& K. Oyama, 1971)
Cerodrillia cratera (W.H. Dall, 1927)
Drillia cratista J.C. Melvill, 1927
Splendrillia cristata (FOSSIL) Powell, 1942 †
Drillia cristobali (FOSSIL) A.A. Olsson, 1922 †
Fenimorea crocea P.J. Fallon, 2016
Splendrillia cruzensis P.J. Fallon, 2016
Cruziturricula cruziana (FOSSIL) (A.A. Olsson, 1932 †)
Fenimorea culexensis G.W. Nowell-Usticke, 1969
Drillia cunninghamae J.H. McLean & L.H. Poorman,1971
Syntomodrillia curacaoensis P.J. Fallon, 2016
Douglassia curasub P.J. Fallon, 2016
Drillia cureti (FOSSIL) A.E.M. Cossmann, 1919 †
Cerodrillia cybele (H.A. Pilsbry & Lowe,1932)