Clavilithes inopinatus (FOSSIL) A.E.M. Cossmann, 1903 †
Peristernia inornata (G.P. Deshayes, 1830) Western Australia
Peristernia insula (FOSSIL) A.A. Olsson, 1922 † Panama, Golfo de los Mosquitos
Fasciolaria insularis C. Fernández, 1977
Streptopelma interlineata (FOSSIL) (R. Tate, 1888 †) Australia, Victoria, S. Grampians Bal
Latirus interpositus (FOSSIL) G.P. Deshayes, 1865 † France, Paris Basin
Streptochetus intortus (FOSSIL) (J.B.P.A. Lamarck,1803 †) France, Brittany
Falsicolus inurbana (FOSSIL) C.R. Laws, 1932 † New Zealand, North Island
Latirus iravadicus (FOSSIL) E.W. Vredenburg, 1923 † Myanmar, Magway, Thayetmyo
Latirus irazu (FOSSIL) A.A. Olsson, 1922 † Costa Rica, Pueblo Nuevo
Peristernia iricolor (J.B. Hombron& C.H. Jacquinot, 1848) Australia, Torres Strait24,8 mm
Turrilatirus iris (J. Lightfoot, 1786) Hawaii34 mm
Fusinus irregularis (A.W. Grabau, 1904) Mexico, Acapulco84,8 mm
Fusinus jasminae R. Hadorn, 1996 South China Sea146 mm
Fusus javanus (FOSSIL) Martin, 1879 †
Peristernia jeaniae (J.C. Melvill, 1911) Réunion20 mm
Pseudolatirus jeanpierrevezzaroi T. Cossignani, 2017 Vietnam, Nha Trang66,3 mm
Fusus jenynsi (FOSSIL) Moore † UK, Wales
Fusinus jijtschenko (FOSSIL) Makarenko, 1976 † Ukraine
Brocchitas johnstoni (FOSSIL) (R. Tate, 1888 †) Tasmania
Fusinus johnstonii (FOSSIL) (J.E. Tenison-Woods,1877 †) Tasmania
Aptyxis jonkeri (FOSSIL) E.J. Koperberg, 1931 † Indonesia, Pulau Burung
Fusinus josei R. Hadorn & B. Rogers,2000 Florida90 mm
Fusinella jucunda (K.H.J. Thiele, 1912)
Polygona jucunda J.T.L. McGinty, 1940 Honduras35,4 mm
Fusinus juliabrownae P. Callomon, M.A. Snyder& R.G. Noseworthy, 2009 Korea
Fasciolaria juncea (FOSSIL) Gardner, 1916 †
Chryseofusus jurgeni (R. Hadorn& K. Fraussen, 2002) Madagascar95 mm
Falsicolus kaiparaensis (FOSSIL) (H.H. Suter, 1917 †)
Fusolatirus kandai (J.T. Kuroda, 1950) Philippines, Balut Island59 mm
Chryseofusus kazdailisi (K. Fraussen& R. Hadorn, 2000) Argentina, Tierra del Fuego57 mm
Latirus keownvillensis (FOSSIL) N.F. Sohl, 1964 †
Fusinus kilburni R. Hadorn, 1999 South Africa, KwaZulu, Natal80 mm
Triplofusus kindlei (FOSSIL) (C.J. Maury, 1910 †) Florida
Granulifusus kiranus T. Shuto, 1958 Philippines, Aliguay Island59,6 mm