Nucula praetenta T. Iredale, 1924
Nucula profundorum Smith, 1885
Nucula proxima T. Say, 1820
Nucula prunicola (FOSSIL) W.H. Dall, 1898 †
Nucula pseudoexigua M. de H. Villarroel& J. Stuardo, 1998
Nucula pusilla G.F. Angas, 1877
Nucula rembangensis (FOSSIL) Martin, 1919 †
Nucula reticularis (FOSSIL) A.E. Ortmann, 1900 †
Nucula revei W. Bergmans, 1978
Nucula rhomboidea (FOSSIL) Phillips, 1848 †
Nucula rhytidopleura R.N. Kilburn, 1999
Nucula rossiana Finlay, 1930
Nucula rugulosa G.B. I Sowerby, 1833
Nucula saltator (T. Iredale, 1939)
Nucula schencki L.G. Hertlein & Strong,1940
Nucula sculpturata G.B. III Sowerby, 1904
Nucula securicula (FOSSIL) Dufour, 1881 †
Nucula sedanensis (FOSSIL) Haanstra & Spiker, 1932 †
Nucula semen K.H.J. Thiele& S.G.A. Jaeckel, 1931
Nucula semiornata A.V.M.D. D'Orbigny, 1842
Nucula semistriata (FOSSIL) R. Tate, 1886 †
Nucula sericea K.H.J. Thiele& S.G.A. Jaeckel, 1931
Nucula shaleri (FOSSIL) W.H. Dall, 1894 †
Nucula similis J. de C. Sowerby, 1813
Nucula similis gallica (FOSSIL) M. Glibert & Poel, 1965 †
Nucula simplex (FOSSIL) G.P. Deshayes, 1842 †
Nucula sinaria (FOSSIL) W.H. Dall, 1898 †
Nucula sinnatella (FOSSIL) A.E.M. Cossmann †
Nucula smithvillensis (FOSSIL) H.B. Stenzel & J. Twining,1957 †
Nucula smitki (FOSSIL) Author unknown †
Nucula sphenopsis (FOSSIL) T.A. Conrad, 1865 †
Nucula stantoni (FOSSIL) L.W. Stephenson, 1923 †
Nucula stephana (FOSSIL) Henry, 1876 †
Nucula storrsi (FOSSIL) Stanton, 1895 †
Nucula striatissima G. Seguenza, 1877