Parvioris innocens (K.H.J. Thiele, 1925)
Fusceulima innotabilis (W.H. Turton, 1932)
Stilifer inopinatus (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1921 †
Leiostraca inquinata (A. Adams, 1864)
Melanella insculpta P. Bouchet & A. Warén,1986
Eulitoma insignis (P. Dautzenberg& H. Fischer, 1896)
Hebeulima insignis (W.H. Turton, 1932)
Pyramidelloides insolita (G.P. Deshayes, 1863)
Goubinia insueta P. Dautzenberg, 1923
Mucronalia interrupta (C.B. Adams, 1864)
Niso interrupta (G.B. I Sowerby, 1834)
Monogamus interspinea C.F. Lützen, 1976
Fusceulima inusta (C. Hedley, 1906)
Mucronalia involuta P.P. Carpenter, 1865
Eulima iota C.B. Adams, 1852
Melanella iotoides P. Bartsch, 1916
Melanella ira W.H. Dall, 1927
Hemiliostraca irafca (P. Bartsch, 1915)
Strombiformis ischna (FOSSIL) Gardner, 1947 †
Fusceulima jacksonensis C.F. Laseron, 1955
Melanella jacksonensis (FOSSIL) A. De Gregorio, 1890 †
Balcis jacululum (FOSSIL) C.J. Maury, 1917 †
Eulima jaculum (H.A. Pilsbry & H.N. Lowe,1932)
Asterophila japonica (J.E. Randall & H. Heath,1912)
Stilifer japonica G.B. Sowerby, 1878
Eulima jaskiewiczi (FOSSIL) W. Baluk, 1995 †
Sticteulima jeffreysiana (Š. Brusina, 1869)
Melanella jeffreysii (G.W. Tryon, 1886)
Eulima johnstonia (FOSSIL) R. Tate †
Eulitoma josephinae P. Bouchet & A. Warén,1986
Hemiliostraca joshuana (J.H. Gatliff& C.J. Gabriel, 1910)
Eulima jucunda K.H.J. Thiele, 1925
Eulima juncea (FOSSIL) Gardner, 1948 †
Melanella junieri J. Espinosa, J.A. Ortea& J. Magaña, 2006
Crinophtheiros junii (L. de Folin, 1887)