Nassarina rolani J. Pelorce & F. Boyer,2005
Mitrella rorida (L.A. Reeve, 1859)
Astyris rosacea (A.A. Gould, 1840)
Mitrella rosadoi L. Bozzetti, 1998
Zemitrella rosea (F.W. Hutton, 1873)
Retizafra rotundata K. Monsecour & D. Monsecour,2016
Aesopus rotundus J. Drivas & M. Jay, 1990
Astyris ruber (E.C. Von Martens, 1881)
Mitrella rubra (E.C. Von Martens, 1881)
Costoanachis rudyi J. Espinosa & J.A. Ortea,2006
Zafra rufopiperata (E.A. Smith, 1884)
Anachis rugosa (G.B. I Sowerby, 1832)
Anachis rugulosa (G.B. II Sowerby, 1844)
Mitrella russeli (J.W. Brazier, 1874)
Columbella rustica (C. Linnaeus, 1758)
Columbella rustica elongata R.A. Philippi, 1836
Columbella rustica striata (P.L. Duclos, 1846)
Columbella rusticoides A. Heilprin, 1887
Parametaria rutschi (FOSSIL) P.O. Jung, 1969 †
Lirastrombina rutschi (FOSSIL) (Gibson-Smith, 1974 †)
Anachis ryalli E. Rolán, 2005
Costoanachis saccostata (FOSSIL) G.E. Radwin, 1968 †
Astyris sagenata W.H. Dall, 1927
Astyris salmonea (K.H. Barnard, 1963)
Atilia salomacensis (FOSSIL) M.A. Peyrot, 1924 †
Zafra salutaris (J.C. Melvill, 1910)
Zafrona samadiae K. Monsecour & D. Monsecour,2016
Mitrella sanctaehelenae (E.A. Smith, 1890)
Aesopus sanctus W.H. Dall, 1919
Anachis sanfelipensis (H.N. Lowe, 1935)
Mitrella santabarbarensis (P.P. Carpenter, 1856)
Mitrella saotomensis E. Rolán, 2005
Zafra savignyi (G.P. Moazzo, 1939 ex F.P. Jousseaume MS)
Zafra saviniae (J.M.R.M. Viader, 1951)
Anachis scalarina (G.B. I Sowerby, 1832)