Cernuella oranensis (P.M.A. Morelet, 1852)
Xerotricha orbignii (A.V.M.D. D'Orbigny,1836)
Helicella ordunensis (W. Kobelt, 1882)
Trochulus oreinos (A.J. Wagner, 1914)
Pyrenaearia organiaca (P. Fagot, 1905)
Kalitinaia orientalis (K.K. Uvalieva& Sacharnova, 1995)
Monacha orsinii (C. Porro, 1841)
Helicella orzai E. Gittenberger& M.Y. Manga, 1980
Monacha oshanovae I. Pintér & I. Pintér,1970
Monacha osinii A. Villa, 1841
Monacha ovularis (J.R. Bourguignat, 1855)
Hystricella oxytropis (R.T. Lowe, 1831)
Abchasohela pachnodes (O. Böttger, 1884)
Xerosecta palatiana (P.M. Pallary, 1918)
Amandana pallaresica (P. Fagot, 1886)
Xeroleuca pallaryi J. Galindo, 2016
Monacha pamphylica B. Hausdorf, 2000
Archaica papanica A.P. Pazylov& A.A. Schileyko, 1992
Ponentina papillosa D.T. Holyoak & G.A. Holyoak,2012
Xeropicta parableta (O. Böttger, 1881)
Xerosecta parieli (P.M. Pallary, 1920)
Schileykiella parlatoris (And. Bivona-Bernardi,1839)
Monacha parumcincta (K.T. Menke, 1828)
Eutheba parumcincta (L. Pfeiffer, 1837)
Pyrenaearia parva A. Ortiz De Zárate, 1956
Helicopsis paulhessei W.A. Lindholm, 1936
Heterostoma paupercula (R.T. Lowe, 1831)
Xerotricha pavida (A. Mousson, 1872)
Metafruticicola pellita (A.E.J. Férussac, 1832)
Metafruticicola pellita rhodia (A.E.J. Férussac, 1819)
Xeromunda peloponnesia B. Hausdorf, 1990
Amandana penchinati (J.R. Bourguignat, 1868)
Urticicola perchtae (FOSSIL) R.B. Salvador, 2013 †
Metatheba perfrequens (P. Hesse, 1914)
Abchasohela pergranulata B. Hausdorf, 2001