Lithotrochus humboldtii (FOSSIL) (von Buch, 1839 †) Argentina, Chubut, Tehuelches
Cantharidus huttonii (E.A. Smith, 1876) New Zealand, Auckland6 mm
Gibbula ibizenca F. Nordsieck, 1982 Spain, Ibiza
Jujubinus igneus T.A. de M. Monterosato,1896 Adriatic Sea
Pulchrastele ikebei (FOSSIL) F.S. MacNeil, 1960 † Okinawa
Ozodochilus imbricatus (FOSSIL) (Morris & Lycett) † UK, England, Gloucestershire
Trochus imperitus (FOSSIL) J. Perner, 1903 †
Stomatella impertusa (H.W. Burrows, 1815) Australia, Albany12 mm
Oxystele impervia (K.T. Menke, 1843) South Africa, Kommetjie20 mm
Ethminolia impressa (G. Nevill & H. Nevill,1869) Sri Lanka
Trochus incarnata H.A. Pilsbry, 1903 Japan
Monilea incerta T. Iredale, 1912 New Zealand
Solariconulus incertus (FOSSIL) Pan, 1982 †
Solarioconulus infrequens (FOSSIL) F. Haas, 1953 † Peru, Cerro de Pasco area
Kanekotrochus infuscatus (A.A. Gould, 1861) Japan, Wakayama13,3 mm
Gibbula insessa unknown
Jujubinus interruptus (W. Wood, 1828) Andaman & Nicobar Islands
Trochus intextus L.C. Kiener, 1850 Philippines, Negros Island21 mm
Gibbula ionica F. Nordsieck, 1982 Spain, Ibiza
Lirularia iridescens (L. von Schrenck, 1863) Fukushima, Japan5 mm
Broderipia iridescens (W.J. Broderip, 1834) Tuamotu, Fakarava4 mm
Ethminolia iridifulgens (J.C. Melvill, 1910) Oman5,7 mm
Priotrochus iris D.G. Herbert, 1988 South Africa, Natal, Durban Bay5 mm
Stomatia irisata H. Dufo, 1840 Tanzania19 mm
Phasianotrochus irisodontes (J.R.C. Quoy& J.P. Gaimard, 1834) South Australia18,5 mm
Enida japonica A. Adams, 1860 China, Zhejiang7 mm
Cantharidus japonicus (A. Adams, 1853) Japan, Aichi10 mm
Clanculus johnstoni C. Hedley, 1917
Charisma josephi (J.E. Tenison-Woods,1877) Tasmania2,7 mm
Gibbula joubini P. Dautzenberg, 1910 West Sahara6 mm
Clanculus jucundus A.A. Gould, 1861 Australia, Sydney
Trochus jujubiniformis (FOSSIL) Martin, 1884 † Indonesia, Yogyakarta
Clanculus jussieui (B.C.M. Payraudeau, 1826) Ceuta
Clanculus jussieui debilis B.C.M. Payraudeau, 1826 Tunisia, Gulf Gabes8 mm
Umbonium jyoganjiense (FOSSIL) (Fujii, 1963 †) Japan, Toyama