| Laberia Stål, 1866 (Tropiduchidae) | Leptormenis Melichar, 1923 (Flatidae) |
| Labicerus Erichson, 1848 (Derbidae) | Leptotambinia Kato, 1931 (Tropiduchidae) |
| Laccocera Van Duzee, 1897 (Delphacidae) | Leptovanua Melichar, 1914 (Tropiduchidae) |
| Lacertinella Rossi Batiz & Remes Lenicov, 2012 (Delphacidae) | Lesabes Medler, 1988 (Flatidae) |
| Lacusa Stål, 1862 (Lophopidae) | Lethierium Dlabola, 1980 (Issidae) |
| Ladella Stål, 1859 (Tropiduchidae) | Leucydria Emeljanov, 1972 (Delphacidae) |
| Ladellodes Fennah, 1965 (Tropiduchidae) | Leusaba Walker, 1857 (Tropiduchidae) |
| Lagoana Melichar, 1905 (Tropiduchidae) | Levu Kirkaldy, 1906 (Derbidae) |
| Lalax† Hamilton, 1990 (Lalacidae†) | Libanissum Dlabola, 1980 (Issidae) |
| Lalobidius Van Stalle, 1985 (Cixiidae) | Liburnia Stål, 1866 (Delphacidae) |
| Lamaxa Bartlett & Kennedy, 2018 (Delphacidae) | Liburniella Crawford, 1914 (Delphacidae) |
| Lambertoniana Dmitriev, 2020 (Ricaniidae) | Lichena Melichar, 1901 (Flatidae) |
| Lamenia Stål, 1859 (Derbidae) | Lichenopsis Schmidt, 1912 (Flatidae) |
| Lanaphora Muir, 1915 (Delphacidae) | Limfjordia† Willman, 1977 (Dictyopharidae) |
| Langsmaniko† Szwedo, 2019 (Cixiidae) | Limois Stål, 1863 (Fulgoridae) |
| Lanshu Yang, Yang & Wilson, 1989 (Tropiduchidae) | Lindbergatium Dlabola, 1984 (Issidae) |
| Lanuvia Stål, 1866 (Achilidae) | Lipocallia Kirkaldy, 1906 (Nogodinidae) |
| Laodelphax Fennah, 1963 (Delphacidae) | Lipsia Löcker & Fletcher, 2006 (Cixiidae) |
| Laohiracia Constant, 2021 (Issidae) | Lisogata Ding, 2006 (Delphacidae) |
| Laoterthrona Ding & Huang, 1980 (Delphacidae) | Litemixia Asche, 1980 (Delphacidae) |
| Lapithasa Melichar, 1914 (Lophopidae) | Lithopsis† Scudder, 1878 (Nogodinidae) |
| Lappida Amyot & Audinet-Serville, 1843 (Dictyopharidae) | Litochodelphax Asche, 1982 (Delphacidae) |
| Larivierea Löcker & Fletcher, 2006 (Cixiidae) | Litocras Emeljanov, 2008 (Dictyopharidae) |
| Lasonia Melichar, 1903 (Caliscelidae) | Livatiella Fennah, 1956 (Delphacidae) |
| Lasura Medler, 1992 (Flatidae) | Liwakka† Szwedo, 2019 (Cixiidae) |
| Latematium Dlabola, 1979 (Issidae) | Locrona Fennah, 1945 (Flatidae) |
| Latilica Emeljanov, 1971 (Issidae) | Loginovia Emeljanov, 1982 (Delphacidae) |
| Latissus Dlabola, 1974 (Issidae) | Loisirella Holzinger, Holzinger & Egger, 2013 (Cixiidae) |
| Latistria Huang & Ding, 1980 (Delphacidae) | Loisobrachys Constant, 2008 (Eurybrachidae) |
| Latois Stål, 1866 (Flatidae) | Lollius Stål, 1866 (Nogodinidae) |
| Lauriana Ren & Qin, 2014 (Delphacidae) | Lomagenes Fennah, 1945 (Kinnaridae) |
| Lavora Muir, 1931 (Tropiduchidae) | Longieusarima Wang, Bourgoin & Zhang, 2017 (Issidae) |
| Lawana Distant, 1906 (Flatidae) | Longtania Ding, 2006 (Delphacidae) |
| Leades Jacobi, 1928 (Cixiidae) | Lophops Spinola, 1839 (Lophopidae) |
| Learcha Stål, 1863 (Fulgoridae) | Losbanosia Muir, 1917 (Derbidae) |
| Lechaea Stål, 1866 (Flatidae) | Loxocephala Schaum, 1850 (Eurybrachidae) |
| Lecopia Medler, 1991 (Flatidae) | Luda Ding, 2006 (Delphacidae) |
| Leialoha Kirkaldy, 1910 (Delphacidae) | Lugardia Distant, 1909 (Ricaniidae) |
| Lemaria Medler, 1988 (Flatidae) | Lugeilangor† Szwedo, 2005 (Derbidae) |
| Lembakaria Swierczewski & Stroinski, 2019 (Flatidae) | Lukabales Stroinski & Szwedo, 2015 (Tropiduchidae) |
| Leomelicharia Muir, 1913 (Derbidae) | Lusanda Stål, 1859 (Issidae) |
| Lepidelphax Remes Lenicov & Walsh, 2013 (Delphacidae) | Luxorianella Asche, 1994 (Delphacidae) |
| Leprota Melichar, 1912 (Dictyopharidae) | Lycorma Stål, 1863 (Fulgoridae) |
| Leptaleocera Muir, 1913 (Derbidae) | Lydda Westwood, 1840 (Derbidae) |
| Leptarciella Fennah, 1958 (Achilidae) | Lyddastrombus Van Stalle, 1992 (Derbidae) |
| Leptodascalia Melichar, 1923 (Flatidae) | Lyncides Stål, 1866 (Fulgoridae) |
| Leptodelphax Haupt, 1927 (Delphacidae) | Lystra Fabricius, 1803 (Fulgoridae) |
| Leptoeurysa Fennah, 1988 (Delphacidae) | Lystrenia Fennah & Carvalho, 1963 (Fulgoridae) |
| Leptolamia Metcalf, 1936 (Cixiidae) |
