Pleurotomoides imperati (FOSSIL) (A. Scacchi, 1835 †)
Etremopsis imperfecta (FOSSIL) (H.H. Suter, 1917 †)
Comarmondia inflata (G.J. De Cristofori& G. Jan, 1832)
Clathurella inflexa (E.C. Von Martens, 1881)
Glyphostoma infracincta (G.B. III Sowerby, 1893)
Lienardia innocens (K.H.J. Thiele, 1925)
Glyphostoma inornatum (FOSSIL) B.M. Landau, F. Da Silva& S.M. Heitz, 2016 †
Clathurella intercalaris (P.P. Carpenter, 1856)
Clathurella iospira (R.P.J. Hervier, 1897)
Clathurella irretita C. Hedley, 1899
Pleurotomoides isabelae (FOSSIL) B.M. Landau & al., 2013 †
Glyphostoma ischnon (FOSSIL) J. Gardner, 1937 †
Glyphostoma jousseaumei R.P.J. Hervier, 1896
Etrema kaipara (FOSSIL) Powell, 1942 †
Glyphostoma kihikihi E.A. Kay, 1979
Etrema kitcheni C.F. Laseron, 1954
Comarmondia kovacsi Varga & Páll-Gergely,2017
Paraclathurella koweitensis (J.C. Melvill, 1904)
Lienardia koyamai L. Bozzetti, 2007
Etrema labiosa C. Hedley, 1922
Glyphostoma lamproidea R.P.J. Hervier, 1896
Clathurella languida (L.A. Reeve, 1845)
Etrema lata (E.A. Smith, 1888)
Etremopsis latiapex (FOSSIL) Powell, 1942 †
Corinnaeturris leucomata (W.H. Dall, 1881)
Clathurella leucostigmata (R.P.J. Hervier, 1896)
Glyphostoma leucum (K.J. Bush, 1893)
Etrema leukospiralis C. Chen & Y.F. Huang,2005
Etrema levicosta C.F. Laseron, 1954
Antimitra lirata (A. Adams, 1865)
Lienardia lischkeana (H.A. Pilsbry, 1904)
Clathromangelia loiselieri J.J. Oberling, 1970
Acamptogenotia loustaui (FOSSIL) (J.B.P.A. Lamarck,1803 †)
Pleurotomoides luisae (FOSSIL) (A. von Koenen, 1872 †)
Lienardia lutea W.H. Pease, 1897