Mimachlamys infumata (FOSSIL) (J.B.P.A. Lamarck,1806 †)
Chlamys ingeniosa (FOSSIL) Yokoyama, 1929 †
Argopecten insuetus (FOSSIL) del Rio, 1992 †
Pecten intermittens (FOSSIL) Whidborne †
Argopecten invalidus (FOSSIL) G.D. Hanna, 1924 †
Annachlamys iredalei A.W.B. Powell, 1958
Argopecten irradians (J.B.P.A. Lamarck, 1819)
Argopecten irradians amplicostatus (W.H. Dall, 1898)
Argopecten irradians concentricus (T. Say, 1822)
Argopecten irradians taylorae E.J. Petuch, 1987
Leptopecten irremotis (FOSSIL) (A.A. Olsson& A. Harbison, 1953 †)
Leopecten isabellensis T.R. Waller, 2007
Chlamys islandica (O.F. Müller, 1776)
Chlamys islandica erythrocomata W.H. Dall, 1907
Chlamys itoigawae (FOSSIL) O. Masuda, 1962 †
Leochlamys iwakiana (FOSSIL) Yokoyama, 1925 †
Chlamys iwamurensis (FOSSIL) Itoigawa, 1955 †
Chlamys iwriensis (FOSSIL) V.N. Sinelnikova, 1990 †
Decatopecten izuensis (FOSSIL) (Nomura & Niino) †
Gloripallium izurense (FOSSIL) Masuda 1958 †
Pecten jacobaea (C. Linnaeus, 1758)
Aequipecten jacobianus (FOSSIL) Cooke 1919 †
Euvola jamaicensis (FOSSIL) Waller, 2011 †
Carolinapecten jamieae (FOSSIL) E.J. Petuch, 2004 †
Chlamys jamviniensis (FOSSIL) Cox, 1927 †
Antillipecten janicoensis (FOSSIL) Waller, 2011 †
Chlamys janiroides A.E.M. Cossmann, 1907
Amusium japonicum (J.F. Gmelin, 1791)
Amusium japonicum formosum T. Habe, 1964
Amusium japonicum taiwanense H.H. Dijkstra, 1988
Radulonectites japonicum (FOSSIL) (I. Hayami, 1975 †)
Pecten javanus (FOSSIL) Martin, 1879 †
Chesapecten jeffersonius (FOSSIL) (T. Say, 1824 †)
Chesapecten jeffersonius septenarius (FOSSIL) (T. Say, 1824 †)
Pecten jickelii R.W. Dunker, 1882