| Caenodelphax Fennah, 1965 (Delphacidae) | Circumdaksha Distant, 1910 (Flatidae) |
| Caepovultus Gnezdilov & Wilson, 2007 (Issidae) | Cisatra Melichar, 1923 (Flatidae) |
| Caesonia Stål, 1866 (Flatidae) | Cixidia Fieber, 1866 (Achilidae) |
| Caffrocixius Fennah, 1967 (Cixiidae) | Cixiites† Handlirsch, 1906 (Fulgoridiidae†) |
| Caffrommatissus Fennah, 1967 (Tropiduchidae) | Cixiopsis Matsumura, 1900 (Tropiduchidae) |
| Caffropyrrhyllis Fennah, 1950 (Achilidae) | Cixiosoma Berg, 1879 (Cixiidae) |
| Cajeta Stål, 1866 (Cixiidae) | Cixitettix† Shcherbakov, 2007 (Perforissidae†) |
| Calamister Kirkaldy, 1906 (Cixiidae) | Cixius Latreille, 1804 (Cixiidae) |
| Calampocus Gnezdilov & Bourgoin, 2009 (Caliscelidae) | Cladodiptera Spinola, 1839 (Fulgoridae) |
| Calauria Stål, 1866 (Flatidae) | Clarabenna Hoch, 2013 (Cixiidae) |
| Calbodus Blanchard, 1852 (Delphacidae) | Clardea Signoret, 1862 (Tropiduchidae) |
| Caldania Nast, 1951 (Fulgoridae) | Cleotyche Emeljanov, 1997 (Dictyopharidae) |
| Caledonisia Bourgoin, 1997 (Meenoplidae) | Clidonisma Fennah, 1969 (Achilidae) |
| Calerda Signoret, 1863 (Achilidae) | Clonaspe Fennah, 1955 (Lophopidae) |
| Caliscelis De Laporte, 1833 (Caliscelidae) | Clusivius Distant, 1917 (Achilidae) |
| Calisuspensus Ding, 2006 (Delphacidae) | Clybeccus Gnezdilov, 2003 (Issidae) |
| Callichlamys Kirkaldy, 1907 (Achilidae) | Clydonagma Fennah, 1969 (Delphacidae) |
| Calligypona Sahlberg, 1871 (Delphacidae) | Clypeosmilus Gnezdilov & Soulier-Perkins, 2017 (Issidae) |
| Callinesia Kirkaldy, 1907 (Achilidae) | Cnidus Stål, 1866 (Achilidae) |
| Callodictya Melichar, 1912 (Dictyopharidae) | Cnodalum Emeljanov, 1978 (Dictyopharidae) |
| Calmar Kirkaldy, 1901 (Fulgoridae) | Cobacella Fennah, 1952 (Derbidae) |
| Calyptoproctus Spinola, 1839 (Fulgoridae) | Cocottea Williams, 1977 (Achilidae) |
| Camerunilla Haglund, 1899 (Tropiduchidae) | Codon Fennah, 1962 (Fulgoridae) |
| Cameruniola Strand, 1928 (Flatidae) | Coelodictya Jacobi, 1910 (Fulgoridae) |
| Campures Gnezdilov, 2015 (Caliscelidae) | Coframalaxius Bourgoin & Le Cesne, 2022 (Cixiidae) |
| Candicarina Löcker & Larivière, 2006 (Cixiidae) | Coinquenda Distant, 1916 (Caliscelidae) |
| Caneirona Distant, 1916 (Cixiidae) | Coleoscyta† Martynov, 1935 (Coleoscytidae†) |
| Cano Gnezdilov, 2011 (Caliscelidae) | Colgar Kirkaldy, 1900 (Flatidae) |
| Canobenna Hoch, 2013 (Cixiidae) | Colgaroides Distant, 1910 (Flatidae) |
| Cantoreanus Dlabola, 1971 (Delphacidae) | Colgorma Kirkaldy, 1904 (Tropiduchidae) |
| Canyra Stål, 1862 (Delphacidae) | Colmadona Kirkaldy, 1901 (Nogodinidae) |
| Capelopterum Melichar, 1906 (Nogodinidae) | Colobesthes Amyot & Audinet-Serville, 1843 (Flatidae) |
| Capena Stål, 1866 (Dictyopharidae) | Colobocus Emeljanov, 1969 (Dictyopharidae) |
| Capenariana Lallemand, 1959 (Fulgoridae) | Colpocara Bergroth, 1920 (Nogodinidae) |
| Capenopsis Melichar, 1912 (Fulgoridae) | Colpoptera Burmeister, 1835 (Nogodinidae) |
| Capistra Fennah, 1947 (Flatidae) | Columbiana Muir, 1919 (Delphacidae) |
| Capocles Emeljanov, 2004 (Fulgoridae) | Columbisoga Muir, 1921 (Delphacidae) |
| Caravellita Emeljanov, 2020 (Cixiidae) | Colvanalia Muir, 1925 (Cixiidae) |
| Carimeta Gnezdilov, 2020 (Issidae) | Comnar Medler, 1988 (Flatidae) |
| Carinodelphax Ding & Yang, 1987 (Delphacidae) | Compactofulgoridium† Bode, 1953 (Fulgoridiidae†) |
| Carinofrons Chen & Li, 2000 (Delphacidae) | Concepcionella Schmidt, 1927 (Caliscelidae) |
| Caristianus Distant, 1916 (Achilidae) | Conchyoptera Signoret, 1860 (Tropiduchidae) |
| Carmentalia Distant, 1917 (Ricaniidae) | Conflata Schmidt, 1912 (Flatidae) |
| Carolus Kirkaldy, 1906 (Cixiidae) | Confuga Fennah, 1975 (Cixiidae) |
| Carphotoma Emeljanov, 2008 (Dictyopharidae) | Congodictya Constant, 2018 (Fulgoridae) |
| Carpopodus† Hamilton, 1990 (Lalacidae†) | Coniunctivena Stroinski, Gnezdilov & Bourgoin, 2011 (Ricaniidae) |
| Carrionia Muir, 1931 (Lophopidae) | Conna Walker, 1857 (Tropiduchidae) |
| Carthaeomorpha Melichar, 1901 (Flatidae) | Connelicita Wang & Bourgoin, 2015 (Tropiduchidae) |
| Carydiopterum Gnezdilov, 2017 (Issidae) | Conocraera Muir, 1916 (Delphacidae) |
| Cascaruna Gnezdilov, 2017 (Issidae) | Conofulgoridium† Bode, 1953 (Fulgoridiidae†) |
| Cathedra Kirkaldy, 1903 (Fulgoridae) | Conomelus Fieber, 1866 (Delphacidae) |
| Catonia Uhler, 1895 (Achilidae) | Conosimus Mulsant & Rey, 1855 (Issidae) |
| Catonidia Uhler, 1896 (Achilidae) | Consociata Qin & Zhang, 2006 (Delphacidae) |
| Catonoides Metcalf, 1938 (Achilidae) | Contigucephalus Caldwell, 1944 (Derbidae) |
| Catracis Medler, 1988 (Flatidae) | Convarcia Schmidt, 1919 (Nogodinidae) |
| Catullia Stål, 1870 (Tropiduchidae) | Copallinges† Szwedo, 2004 (Derbidae) |
| Catulliaria Muir, 1931 (Tropiduchidae) | Cophteroma Gnezdilov, 2020 (Issidae) |
| Catulliastites† Szwedo, 2019 (Tropiduchidae) | Copicerus Swartz, 1802 (Delphacidae) |
| Catullioides Bierman, 1910 (Tropiduchidae) | Copidocephala Stål, 1869 (Fulgoridae) |
| Caudibeccus Gnezdilov & O'Brien, 2008 (Nogodinidae) | Coppa Emeljanov, 1969 (Dictyopharidae) |
| Cavatorium Dlabola, 1980 (Issidae) | Coppidius Emeljanov, 1969 (Dictyopharidae) |
| Cedochrea Emeljanov, 1995 (Derbidae) | Copsyrna Stål, 1862 (Flatidae) |
| Cedochrusa Emeljanov, 2008 (Derbidae) | Coptopola Stål, 1869 (Fulgoridae) |
| Cedusa Fowler, 1904 (Derbidae) | Coracodelphax Vilbaste, 1968 (Delphacidae) |
| Celebenna Hoch & Wessel, 2011 (Cixiidae) | Cordela Gnezdilov, 2019 (Issidae) |
| Celinapterix† Petrulevicius, 2005 (Nogodinidae) | Cordobenna Hoch, 2013 (Cixiidae) |
| Celyphoma Emeljanov, 1971 (Issidae) | Cordoliarus Löcker, 2006 (Cixiidae) |
| Cemopsis Fennah, 1978 (Delphacidae) | Corethrura Hope, 1843 (Lophopidae) |
| Cemus Fennah, 1964 (Delphacidae) | Cormidius Emeljanov, 1972 (Delphacidae) |
| Cenanges Fennah, 1952 (Derbidae) | Cormophana Emeljanov, 2011 (Dictyopharidae) |
| Cenchrea Westwood, 1840 (Derbidae) | Coronacella Metcalf, 1950 (Delphacidae) |
| Cenestra Stål, 1862 (Flatidae) | Coronersia Emeljanov, 2011 (Dictyopharidae) |
| Cenophron Fennah, 1969 (Achilidae) | Coruncanius Distant, 1916 (Issidae) |
| Centromeria Stål, 1870 (Dictyopharidae) | Corylonga Löcker & Fletcher, 2006 (Cixiidae) |
| Centromeriana Melichar, 1912 (Dictyopharidae) | Corymbius Gnezdilov, 2002 (Issidae) |
| Ceragra Emeljanov, 1996 (Caliscelidae) | Cotoya Anufriev, 1977 (Delphacidae) |
| Ceratogergithus Gnezdilov, 2017 (Issidae) | Cotradechites† Fennah, 1968 (Nogodinidae) |
| Cerfennia Stål, 1870 (Flatidae) | Cotrades Walker, 1858 (Ricaniidae) |
| Cermada Emeljanov, 2000 (Cixiidae) | Cotylana Fennah, 1954 (Nogodinidae) |
| Cernea Williams, 1977 (Achilidae) | Crepusia Stål, 1866 (Fulgoridae) |
| Cerogenes Horváth, 1909 (Fulgoridae) | Cretargus† Shcherbakov, 2007 (Perforissidae†) |
| Ceropupa Emeljanov, 1995 (Derbidae) | Cretocixius† Zhang, 2002 (Lalacidae†) |
| Cerynia Stål, 1862 (Flatidae) | Cretodorus† Fu & Huang, 2020 (Mimarachnidae†) |
| Chaetormenis Melichar, 1923 (Flatidae) | Cretofennahia† Martins-Neto & Szwedo, 2007 (Cixiidae) |
| Chalia Walker, 1858 (Eurybrachidae) | Criomorphus Curtis, 1833 (Delphacidae) |
| Chalicoridulum† Szwedo & Ansorge, 2014 (Mimarachnidae†) | Criopaca Schmidt, 1918 (Nogodinidae) |
| Changeondelphax Kwon, 1982 (Delphacidae) | Crocodictya Emeljanov, 2008 (Dictyopharidae) |
| Chasmacephala Fennah, 1945 (Tropiduchidae) | Cromgar Medler, 2000 (Flatidae) |
| Chathamaka Larivière, 1999 (Cixiidae) | Cromna Walker, 1857 (Flatidae) |
| Chaturbuja Distant, 1906 (Flatidae) | Cromnella Fennah, 1969 (Flatidae) |
| Cheiloceps Uhler, 1895 (Issidae) | Crosbixius† Lambkin, 2020 (Surijokocixiidae†) |
| Chewobrachys Constant, 2008 (Eurybrachidae) | Cryomna Medler, 2000 (Flatidae) |
| Chidaea Emeljanov, 2000 (Cixiidae) | Cryptobarsac Fletcher & Moir, 2002 (Flatidae) |
| Chilobia Stål, 1863 (Fulgoridae) | Cryptoflata Melichar, 1902 (Flatidae) |
| Chiltana Shakila & Akbar, 1995 (Dictyopharidae) | Cubana Uhler, 1895 (Cixiidae) |
| Chimetopon Schmidt, 1910 (Issidae) | Cubicostissus† Bourgoin & Nel, 2020 (Issidae) |
| Chionomus Fennah, 1971 (Delphacidae) | Cuernavaca Kirkaldy, 1913 (Dictyopharidae) |
| Chirodisca Emeljanov, 1996 (Caliscelidae) | Cuneoceps Williams, 1981 (Tropiduchidae) |
| Chlamydopteryx Kirkaldy, 1907 (Issidae) | Curetia Stål, 1862 (Fulgoridae) |
| Chloriona Fieber, 1866 (Delphacidae) | Curtometopum Muir, 1926 (Delphacidae) |
| Chlorionidea Löw, 1885 (Delphacidae) | Cyamosa Stroinski, Gnezdilov & Bourgoin, 2011 (Ricaniidae) |
| Chlorochara Stål, 1869 (Acanaloniidae) | Cyarda Walker, 1858 (Flatidae) |
| Chlorodus Johnson & Ledig, 1918 (Cixiidae) | Cyclobenna Hoch, 2013 (Cixiidae) |
| Chondrodire Emeljanov, 2011 (Dictyopharidae) | Cyclometa Gnezdilov, 2020 (Issidae) |
| Chondrophana Emeljanov, 2015 (Dictyopharidae) | Cyclometopum Muir, 1913 (Derbidae) |
| Chondroptera Bergroth, 1910 (Nogodinidae) | Cyclopoliarus Fennah, 1945 (Cixiidae) |
| Choutagus Zhang, Wang & Che, 2006 (Issidae) | Cyclopterum Gnezdilov & O'Brien, 2014 (Flatidae) |
| Chroneba Stål, 1859 (Achilidae) | Cyphoceratops Uhler, 1901 (Tropiduchidae) |
| Chrysopuchus Gnezdilov, 2013 (Tropiduchidae) | Cyphopterum Melichar, 1905 (Flatidae) |
| Cibrica Emeljanov, 2007 (Cixiidae) | Cyranometra Bourgoin, 1987 (Tettigometridae) |
| Cicerama Emeljanov, 2007 (Cixiidae) | Cyrpoptus Stål, 1862 (Fulgoridae) |
| Cicimora Emeljanov, 1998 (Caliscelidae) | Cyrtomycta Williams, 1981 (Tropiduchidae) |
| Cintux† Stroinski & Szwedo, 2012 (Lophopidae) | Cythna Kirkaldy, 1906 (Achilidae) |
| Cionoderella Fennah, 1950 (Achilidae) |
