Lithotrochus humboldtii (FOSSIL) (von Buch, 1839 †)
Cantharidus huttonii (E.A. Smith, 1876)
Gibbula ibizenca F. Nordsieck, 1982
Jujubinus igneus T.A. de M. Monterosato,1896
Pulchrastele ikebei (FOSSIL) F.S. MacNeil, 1960 †
Ozodochilus imbricatus (FOSSIL) (Morris & Lycett) †
Trochus imperitus (FOSSIL) J. Perner, 1903 †
Stomatella impertusa (H.W. Burrows, 1815)
Oxystele impervia (K.T. Menke, 1843)
Ethminolia impressa (G. Nevill & H. Nevill,1869)
Trochus incarnata H.A. Pilsbry, 1903
Monilea incerta T. Iredale, 1912
Solariconulus incertus (FOSSIL) Pan, 1982 †
Solarioconulus infrequens (FOSSIL) F. Haas, 1953 †
Kanekotrochus infuscatus (A.A. Gould, 1861)
Gibbula insessa unknown
Jujubinus interruptus (W. Wood, 1828)
Trochus intextus L.C. Kiener, 1850
Gibbula ionica F. Nordsieck, 1982
Lirularia iridescens (L. von Schrenck, 1863)
Broderipia iridescens (W.J. Broderip, 1834)
Ethminolia iridifulgens (J.C. Melvill, 1910)
Priotrochus iris D.G. Herbert, 1988
Stomatia irisata H. Dufo, 1840
Phasianotrochus irisodontes (J.R.C. Quoy& J.P. Gaimard, 1834)
Enida japonica A. Adams, 1860
Cantharidus japonicus (A. Adams, 1853)
Clanculus johnstoni C. Hedley, 1917
Charisma josephi (J.E. Tenison-Woods,1877)
Gibbula joubini P. Dautzenberg, 1910
Clanculus jucundus A.A. Gould, 1861
Trochus jujubiniformis (FOSSIL) Martin, 1884 †
Clanculus jussieui (B.C.M. Payraudeau, 1826)
Clanculus jussieui debilis B.C.M. Payraudeau, 1826
Umbonium jyoganjiense (FOSSIL) (Fujii, 1963 †)