Leptochiton incongruus (W.H. Dall, 1908)
Leptochiton incubatus Sirenko, 2017
Leptochiton inquinatus (L.A. Reeve, 1847)
Leptochiton japonicus (K.H.J. Thiele, 1909)
Leptochiton josei (FOSSIL) Dell'Angelo & al., 2013 †
Leptochiton juvenis (E.H.J. Leloup, 1981)
Leptochiton kaasi B.I. Sirenko, 1990
Leptochiton kantori Sirenko, 2016
Leptochiton kerguelensis A. Haddon, 1886
Leptochiton kurnilatus P. Kaas, 1985
Leptochiton lascrusesi B.I. Sirenko, 2015
Leptochiton latidens (J.R.M. Bergenhayn, 1933)
Leptochiton laurae E. Schwabe & J. Sellanes,2010
Leptochiton leloupi P. Kaas, 1979
Leptochiton liapini (FOSSIL) B.I. Sirenko, 2013 †
Leptochiton lignatilis Angelo, Bertolaso& M. Sosso, 2015
Leptochiton lignatilis (FOSSIL) Dell'Angelo, Bertolaso& M. Sosso, 2015 †
Leptochiton linseae B.I. Sirenko, 2015
Leptochiton liratellus (T. Iredale & A.F.B. Hull,1925)
Leptochiton liratus (A. Adams & G.F. Angas,1864)
Leptochiton longibranchiae B.I. Sirenko, 2015
Leptochiton longisetosus J.D. Sigwart & B.I. Sirenko,2012
Leptochiton lukini B.I. Sirenko, 1990
Leptochiton macleani B.I. Sirenko, 2015
Leptochiton matthewsianus (W.T. Bednall in W.T. Bednall& E.H. Matthews, 1906)
Leptochiton medinae (H.P. Plate, 1899)
Leptochiton meiringae P. Kaas, 1985
Leptochiton micropustulosus P. Kaas, 1994
Leptochiton morloffsteinensis (FOSSIL) (Fiedel & Keupp, 1988 †)
Leptochiton muelleri B.I. Sirenko & E. Schwabe,2011
Leptochiton mutschkeae B.I. Sirenko, 2015
Leptochiton neocaledonicus Sirenko, 2016
Leptochiton nexus P.P. Carpenter, 1864
Leptochiton nierstraszi (E.H.J. Leloup, 1981)
Leptochiton norfolcensis (T. Iredale & A.F.B. Hull,1912)