Splendrillia candidula (C. Hedley, 1922)
Clavus cantharis (L.A. Reeve, 1845)
Fusiturricula capeloi (FOSSIL) B.M. Landau, F. Da Silva& S.M. Heitz, 2016 †
Drillia capta E.A. Smith, 1899
Drillia captiva E.A. Smith, 1899
Spirotropis carinata (FOSSIL) (Ant. Bivona-Bernardi& And. Bivona-Bernardi, 1838 †)
Cerodrillia carminura (W.H. Dall, 1889)
Splendrillia carolae F.E. Wells, 1995
Splendrillia carolinae (P. Bartsch, 1934)
Cymatosyrinx carpenteri (A.E. Verrill& S. Smith in A.E. Verrill, 1880)
Drillia carruca (FOSSIL) A.A. Olsson, 1922 †
Fenimorea caysalensis P.J. Fallon, 2016
Drillia cecchii F.P. Jousseaume, 1891
Spirotropis centimata (W.H. Dall, 1889)
Drillia centrodes (FOSSIL) J. Gardner, 1937 †
Drillia cercadonis (FOSSIL) C.J. Maury, 1917 †
Drillia cerithioides (FOSSIL) (C. des Moulins, 1842 †)
Clathrodrillia chaaci (J. Espinosa & E. Rolán,1995)
Agladrillia characta (FOSSIL) W.P. Woodring, 1970 †
Splendrillia chathamensis A.V. Sysoev & Y.I. Kantor,1989
Elaeocyma chinensis (F.S. MacNeil, 1960)
Leptadrillia cinereopellis J.T. Kuroda & K. Oyama,1971
Drillia citria (FOSSIL) A.A. Olsson, 1922 †
Cerodrillia clappi P. Bartsch & H.A. Rehder,1939
Clavus clara (L.A. Reeve, 1845)
Bellaspira clarionensis J.H. McLean & L.H. Poorman,1970
Splendrillia clava (FOSSIL) Powell, 1942 †
Clavus clavata (G.B. I Sowerby, 1870)
Austroclavus clifdenensis (FOSSIL) A.W.B. Powell, 1942 †
Splendrillia clifdenensis (FOSSIL) A.W.B. Powell, 1942 †
Drillia clionellaeformis (H.C. Weinkauff& W. Kobelt, 1875)
Splendrillia clydonia (J.C. Melvill & R. Standen,1901)
Clathrodrillia coalingensis (FOSSIL) (R. Arnold, 1910 †)
Splendrillia coccinata (L.A. Reeve, 1845)
Drillia coccos (FOSSIL) A.A. Olsson, 1922 †