Faustina lefeburiana (A.E.J. Férussac, 1821) Italy, Monfalcone27 mm
Caucasotachea lencoranea (A. Mousson, 1863) Russia, Georgia5 mm
Lechatelieria leprevieri (P.M. Pallary, 1926) Morocco, cap Cantin30 mm
Helix leptostictus R.T. Lowe, 1831 Portugal, Madeira
Helix leucolena J.C.H. Crosse, 1867
Palaeotachea leymerieana (FOSSIL) (Noulet, 1854) †
Tingitana liasana (P.M. Pallary, 1918) Morocco, cap Cantin24 mm
Helix ligata O.F. Müller, 1774 Italy, Appennino meridionale25 mm
Helix ligata meyeri W. Kobelt, 1906 Italy, monte Pollino, Calabria30 mm
Helix lima A.E.J. Férussac, 1821
Eremina linanprietoae T. Cossignani& J. Galindo, 2012 Morocco, Tan-Tan29,4 mm
Theba lindneri Kittel, 2012 PT-POR
Pseudotachea litturata (L. Pfeiffer, 1851) Morocco, cap Cantin
Pseudotachea liturata (L. Pfeiffer, 1851) Spain, Malaga
Levantina longinqua (H. Schütt & P. Subai,1996)
Otala lucasii G.P. Deshayes, 1850 Algeria34 mm
Helix lucorum C. Linnaeus, 1758 Greece, Kozani47 mm
Helix lucorum taurica I. Krynicki, 1833 Ukraine, Herson41,3 mm
Helix luctativa J.F. Mabille, 1889 Vietnam, Tonkin20 mm
Mesodontopsis ludovici (FOSSIL) (Noulet, 1854 †)
Helix lutescens E.A. Rossmässler, 1837 Slovakia29 mm
Eremina lybica H.R. Kaltenbach, 1942 Libya28,22 mm
Isaurica lycia (E.C. Von Martens, 1889) Turkey
Theba macandrewiana (L. Pfeiffer, 1833) Portugal, Madeira
Megalotachea macrocheila (FOSSIL) (A.E. Reuss in A.E. Reuss& Meyer, 1849 †) Czech Republic, Chomutov19 mm
Helix maeotica W.A. Wenz, 1926 Romania
Stekloviella magna (FOSSIL) (Lueger, 1981) †
Eobania magnilabiata (FOSSIL) (Sacco, 1884) †
Megalotachea maguntina (FOSSIL) (Deshayes, 1831) †
Helix maltzani W. Kobelt, 1883 Turkey
Faustina maranajensis (A.J. Wagner, 1914) Albania
Levantina mardinensis W. Kobelt, 1900 Iraq
Iberus marmoratus A.E.J. Férussac, 1823 Spain24 mm
Iberus marmoratus alcarazanus (A. Guirao, 1854) Spain29,6 mm
Iberus marmoratus cobosi (C.M. Ibáñez& M.R. Alonso, 1977) Spain24,4 mm