Xerocrassa lasithiensis B. Hausdorf & J. Sauer,2009
Xerocrassa latastei (A. Letourneux& J.R. Bourguignat, 1887)
Spirorbula latens R.T. Lowe, 1852
Euomphalia latus (J.W. Hall1858)
Monacha laxa B. Hausdorf, 2000
Discula leacockiana Wallaskov, 1878
Hystricella leacockiana (T.V. Wollaston, 1878)
Xerosecta lecointrei (P.M. Pallary, 1919)
Metafruticicola lecta (A.E.J. Férussac, 1832)
Xeropicta ledereri (L. Pfeiffer, 1856)
Xerosecta lemprierei (P.M. Pallary, 1915)
Actinella lentiginosa (R.T. Lowe, 1831)
Actinella lentiginosa stellaris R.T. Lowe, 1852
Paedhoplita lentina (E.C. Von Martens, 1885)
Xerosecta leptocolpata (P.M. Pallary, 1923)
Leucochroopsis leptoloma (FOSSIL) (A. Braun in Walchner,1851) †
Leptostictea leptostictus (R.T. Lowe, 1852)
Candidula lernaea B. Hausdorf, 1991
Petasina leucozona (C. Pfeiffer, 1828)
Petasina leucozona heteromorpha (C.A. Westerlund, 1876)
Petasina leucozona ovirensis (E.A. Rossmässler, 1838)
Monacha leucozona B. Hausdorf, 2000
Monacha liebegottae B. Hausdorf, 2000
Trochoidea liebetruti (J.A. Albers, 1852)
Helicopsis likharevi A.A. Schileyko, 1978
Hygromia limbata (J.P.R. Draparnaud, 1805)
Hygromia limbata sublimbata (J.R. Bourguignat, 1882)
Paedhoplita lindholmi L. Tsvetkov, 1943
Plebecula littorinella (J.F. Mabille, 1883)
Microxeromagna lowei (V.L.V. Potiez& A. Michaud, 1835)
Pseudocampylaea loweii (A.E.J. Férussac, 1835)
Pseudocampylaea lowii (A. Férussac, 1835)
Plicuteria lubomirskii (Slosarski, 1881)
Helicopsis luganica N. Gural-Sverlova, 2010
Trichia lurida (C. Pfeiffer, 1828)