Voluta heptagonalis (FOSSIL) R. Tate, 1889 †
Saotomea hinae P. Bail & M. Chino, 2010
Fulgoraria hirasei (G.B. III Sowerby, 1912)
Lyria hirugaensis (FOSSIL) (M. Yokoyama, 1928 †)
Notovoluta hoskensae G.T. Poppe, 1992
Cymbiola houarti G.T. Poppe, 1985
Cymbiola hughmorrisoni P. Bail & A. Limpus, 1997
Gosavia humberti (FOSSIL) (d'Archaic & Haime,1854 †)
Volutilithes humei (FOSSIL) Abbass, 1967 †
Fulgoraria humerosa H.A. Rehder, 1969
Amoria hunteri (T. Iredale, 1931)
Alcithoe hurupiensis (FOSSIL) J. Marwick, 1926 †
Mauira huttoni (FOSSIL) (H.H. Suter, 1914 †)
Lyria ickei (FOSSIL) (K. Martin, 1906 †)
Cymbiola imperialis (J. Lightfoot, 1786)
Cymbiola imperialis robinsoni (R.L. Burch, 1954)
Montia inaequiplicata (FOSSIL) (Briart & Cornet, 1887 †)
Chiraluta inca (FOSSIL) A.A. Olsson, 1931 †
Lyria incomperta (FOSSIL) R.C. Hoerle & E.H. Vokes,1978 †
Psephaea indurata (FOSSIL) (T.A. Conrad, 1849 †)
Metamelon inermis (FOSSIL) Finlay, 1926 †
Nannamoria inflata P. Bail & A. Limpus, 2008
Metamelon informis (FOSSIL) C.R. Laws, 1932 †
Cymbiola innexa (L.A. Reeve, 1849)
Cymbiola innexa marispuma M. Angioy & G. Biraghi,1977
Nannamoria inopinata T.A. Darragh, 1979
Athleta inornatus (FOSSIL) P. Oppenheim, 1906 †
Mauithoe insignis (FOSSIL) (J. Marwick, 1926 †)
Lyria insignita T. Iredale, 1940
Athleta insperata T.A. Darragh, 1979
Cymbiola intruderi G.T. Poppe, 1985
Harpulina intusdentata (FOSSIL) (A.E.M. Cossmann, 1889 †)
Eovoluta iolinensis (FOSSIL) J.M. Pacaud, 2016 †
Alcithoe irregularis (FOSSIL) J. Marwick, 1926 †
Cymbiola irvinae (E.A. Smith, 1909)