Drillia inchoata (R. Sturany, 1903)
Drillia incilifera (FOSSIL) (T.A. Conrad, 1834 †)
Iredalea inclinata (G.B. III Sowerby, 1893)
Splendrillia incompta (FOSSIL) F.S. MacNeil, 1960 †
Crassopleura incrassata (FOSSIL) (F. Dujardin, 1837 †)
Drillia indica (FOSSIL) E.W. Vredenburg, 1921 †
Drillia indra K.H.J. Thiele, 1925
Drillia inexspectata (FOSSIL) (K. Martin, 1895 †)
Clavus infrafusca (G.B. III Sowerby, 1893)
Clavus infuscatus R.N. Kilburn & H. Dekker,2008
Clathrodrillia inimica (W.H. Dall, 1927)
Drillia inniadda (FOSSIL) W.C. Mansfield, 1925 †
Drillia inornata J.H. McLean & L.H. Poorman,1971
Splendrillia intermaculata (E.A. Smith, 1879)
Splendrillia intermedia F.E. Wells, 1995
Clathrodrillia interpleura (W.H. Dall & C.T. Simpson,1901)
Decoradrillia interstincta P.J. Fallon, 2016
Drillia investigatoris (E.A. Smith, 1899)
Fusiturricula iole W.P. Woodring, 1928
Syntomodrillia iphis (FOSSIL) W.P. Woodring, 1928 †
Clavus isibopho (R.N. Kilburn, 1988)
Clathrodrillia islalindae (FOSSIL) (C.J. Maury, 1917 †)
Eumetadrillia isthmica (FOSSIL) (J. Brown & H.A. Pilsbry,1911 †)
Splendrillia jacula R.K. Dell, 1956
Calliclava jaliscoensis J.H. McLean & L.H. Poorman,1971
Fenimorea janetae P. Bartsch, 1934
Drillia janseni H. Strebel, 1905
Clavus japonicus (C.E. Lischke, 1869)
Fusiturricula jaquensis (Sowerby, 1850)
Splendrillia jarosae F.E. Wells, 1991
Clavus johnsoni (P. Bartsch, 1934)
Fenimorea jongreenlawi P.J. Fallon, 2016
Clathrodrillia jungi (FOSSIL) B.M. Landau, F. Da Silva& S.M. Heitz, 2016 †
Austroclavus kaipara (FOSSIL) (C.R. Laws, 1939 †)
Splendrillia kapuranga R.K. Dell, 1953