Clavilithes inopinatus (FOSSIL) A.E.M. Cossmann, 1903 †
Peristernia inornata (G.P. Deshayes, 1830)
Peristernia insula (FOSSIL) A.A. Olsson, 1922 †
Fasciolaria insularis C. Fernández, 1977
Streptopelma interlineata (FOSSIL) (R. Tate, 1888 †)
Latirus interpositus (FOSSIL) G.P. Deshayes, 1865 †
Streptochetus intortus (FOSSIL) (J.B.P.A. Lamarck,1803 †)
Falsicolus inurbana (FOSSIL) C.R. Laws, 1932 †
Latirus iravadicus (FOSSIL) E.W. Vredenburg, 1923 †
Latirus irazu (FOSSIL) A.A. Olsson, 1922 †
Peristernia iricolor (J.B. Hombron& C.H. Jacquinot, 1848)
Turrilatirus iris (J. Lightfoot, 1786)
Fusinus irregularis (A.W. Grabau, 1904)
Fusinus jasminae R. Hadorn, 1996
Fusus javanus (FOSSIL) Martin, 1879 †
Peristernia jeaniae (J.C. Melvill, 1911)
Pseudolatirus jeanpierrevezzaroi T. Cossignani, 2017
Fusus jenynsi (FOSSIL) Moore †
Fusinus jijtschenko (FOSSIL) Makarenko, 1976 †
Brocchitas johnstoni (FOSSIL) (R. Tate, 1888 †)
Fusinus johnstonii (FOSSIL) (J.E. Tenison-Woods,1877 †)
Aptyxis jonkeri (FOSSIL) E.J. Koperberg, 1931 †
Fusinus josei R. Hadorn & B. Rogers,2000
Fusinella jucunda (K.H.J. Thiele, 1912)
Polygona jucunda J.T.L. McGinty, 1940
Fusinus juliabrownae P. Callomon, M.A. Snyder& R.G. Noseworthy, 2009
Fasciolaria juncea (FOSSIL) Gardner, 1916 †
Chryseofusus jurgeni (R. Hadorn & K. Fraussen,2002)
Falsicolus kaiparaensis (FOSSIL) (H.H. Suter, 1917 †)
Fusolatirus kandai (J.T. Kuroda, 1950)
Chryseofusus kazdailisi (K. Fraussen & R. Hadorn,2000)
Latirus keownvillensis (FOSSIL) N.F. Sohl, 1964 †
Fusinus kilburni R. Hadorn, 1999
Triplofusus kindlei (FOSSIL) (C.J. Maury, 1910 †)
Granulifusus kiranus T. Shuto, 1958