Phasianotrochus sericinus (K.H.J. Thiele, 1930)
Gibbula serpa F. Nordsieck, 1982
Prothalotia serpentina (J.R.C. Quoy& J.P. Gaimard, 1859)
Jujubinus sexangularis (FOSSIL) (C.L.F. von Sandberger,1859 †)
Clanculus simoni G.T. Poppe, S.P. Tagaro& H. Dekker, 2006
Charisma simplex (C.F. Laseron, 1954)
Monilea simulans E.A. Smith, 1899
Oxystele sinensis (J.F. Gmelin, 1791)
Trochus smaragdus L.A. Reeve, 1861
Monilea smithi (W. Wood, 1828)
Monilea solanderi (R.A. Philippi, 1851)
Gibbula solarium (FOSSIL) (P. Nyst, 1835 †)
Praecia sondeianus (FOSSIL) Martin, 1905 †
Clelandella sovisi (FOSSIL) M. Harzhauser, 2014 †
Clanculus spadiceus (R.A. Philippi, 1848)
Antisolarium spectandrum (FOSSIL) C.R. Laws, 1950 †
Pseudominolia splendens (G.B. III Sowerby, 1897)
Stomatia splendidula A. Adams, 1855
Gibbula spratti (E. Forbes, 1844)
Gibbula spratti nanodea F. Nordsieck, 1982
Gibbula spurca (A.A. Gould, 1856)
Trochus squamosior (FOSSIL) Hudleston †
Trochus squarrosus J.B.P.A. Lamarck, 1822
Sericominolia stearnsii (H.A. Pilsbry, 1895)
Trochus stefaninii (FOSSIL) S. Nardini, 1934 †
Agagus stellamaris D.G. Herbert, 1991
Stomatella stellata (S.M. Souverbie& R.P. Montrouzier, 1863)
Trochus stellatus J.F. Gmelin, 1791
Clanculus stigmatarius A. Adams, 1853
Antisolarium stoliczkai (FOSSIL) (C.A. von Zittel, 1865 †)
Gibbula stoliczkana (G. Nevill & H. Nevill,1869)
Eurytrochus strangei (A. Adams, 1853)
Stomatella striatula (A. Adams, 1850)
Trochus striatula A. Garrett, 1857
Jujubinus striatus (C. Linnaeus, 1758)