Faustina lefeburiana (A.E.J. Férussac, 1821)
Caucasotachea lencoranea (A. Mousson, 1863)
Lechatelieria leprevieri (P.M. Pallary, 1926)
Helix leptostictus R.T. Lowe, 1831
Helix leucolena J.C.H. Crosse, 1867
Palaeotachea leymerieana (FOSSIL) (Noulet, 1854) †
Tingitana liasana (P.M. Pallary, 1918)
Helix ligata O.F. Müller, 1774
Helix ligata meyeri W. Kobelt, 1906
Helix lima A.E.J. Férussac, 1821
Eremina linanprietoae T. Cossignani & J. Galindo,2012
Theba lindneri Kittel, 2012
Pseudotachea litturata (L. Pfeiffer, 1851)
Pseudotachea liturata (L. Pfeiffer, 1851)
Levantina longinqua (H. Schütt & P. Subai,1996)
Otala lucasii G.P. Deshayes, 1850
Helix lucorum C. Linnaeus, 1758
Helix lucorum taurica I. Krynicki, 1833
Helix luctativa J.F. Mabille, 1889
Mesodontopsis ludovici (FOSSIL) (Noulet, 1854 †)
Helix lutescens E.A. Rossmässler, 1837
Eremina lybica H.R. Kaltenbach, 1942
Isaurica lycia (E.C. Von Martens, 1889)
Theba macandrewiana (L. Pfeiffer, 1833)
Megalotachea macrocheila (FOSSIL) (A.E. Reuss in A.E. Reuss& Meyer, 1849 †)
Helix maeotica W.A. Wenz, 1926
Stekloviella magna (FOSSIL) (Lueger, 1981) †
Eobania magnilabiata (FOSSIL) (Sacco, 1884) †
Megalotachea maguntina (FOSSIL) (Deshayes, 1831) †
Helix maltzani W. Kobelt, 1883
Faustina maranajensis (A.J. Wagner, 1914)
Levantina mardinensis W. Kobelt, 1900
Iberus marmoratus A.E.J. Férussac, 1823
Iberus marmoratus alcarazanus (A. Guirao, 1854)
Iberus marmoratus cobosi (C.M. Ibáñez & M.R. Alonso,1977)