Vicetia ogormani (FOSSIL) A.E.M. Cossmann, 1923 †
Cypraea ohiroi (FOSSIL) O. Masuda, 1967 †
Palmulacypraea omii (H. Ikeda, 1998)
Austrocypraea onkastoma (FOSSIL) A.E.M. Cossmann, 1903 †
Erronea onyx (C. Linnaeus, 1758)
Erronea onyx draco Bergonzoni, 2013
Erronea onyx succincta (C. Linnaeus, 1758)
Barycypraea orangensis (FOSSIL) C. Beets, 1942 †
Loxacypraea orbignyana (FOSSIL) (J.P.S. Grateloup,1846 †)
Zoila orientalis G. Raybaudi Massilia,1985
Zoila orientalis gabensis J. Van Heesvelde& J. Deprez, 2007
Umbilia oriettae F.Jr. Lorenz & D. Massiglia,2005
Muracypraea ormenoi (FOSSIL) DeVries & al., 2006 †
Purpuradusta oryzaeformis F.Jr. Lorenz& G.H.W. Sterba, 1999
Naria ostergaardi (W.H. Dall, 1921)
Cypraea ovata (FOSSIL) Martin, 1879 †
Erronea ovum (J.F. Gmelin, 1791)
Erronea ovum chrysostoma F.A. Schilder, 1927
Erronea ovum erici F.Jr. Lorenz, C.B. Bridges& M. Chiapponi, 2011
Erronea ovum palauensis F.A. Schilder & M. Schilder,1938
Bistolida owenii (J.E. Grayin G.B. II Sowerby, 1832)
Erronea pallida (J.E. Gray, 1824)
Erronea pallida insulicola F.A. Schilder & M. Schilder,1938
Blasicrura pallidula (J.S. Gaskoin, 1849)
Blasicrura pallidula rhinoceros (S.M. Souverbie, 1865)
Blasicrura pallidula vivia W.R. Steadman & B.C. Cotton,1943
Cypraea pantherina J. Lightfoot, 1786
Cypraea pantherina albonitens J.C. Melvill, 1888
Cypraea pantherina catulus F.A. Schilder, 1924
Cypraea pantherina funebralis G.R. Sulliotti, 1924
Cypraea pantherina rasnasraniensis E.L. Heiman & H.K. Mienis,2001
Cypraea pantherina vinosa J.F. Gmelin, 1791
Propustularia paraguanensis (FOSSIL) B.M. Landau & Groves,2011 †
Cypraea parahybensis (FOSSIL) C.J. Maury, 1930 †
Plaziatia parasigmapertura (FOSSIL) L. Dolin & P. Lozouet,2004 †