| Iberanum Gnezdilov, 2003 (Issidae) | Intandela Hesse, 1925 (Tropiduchidae) |
| Iberofoveopsis† Penalver & Szwedo, 2010 (Perforissidae†) | Interamma Walker, 1870 (Derbidae) |
| Ibleocixius D'Urso & Grasso, 2009 (Cixiidae) | Iolania Kirkaldy, 1902 (Cixiidae) |
| Idiobregma Anufriev, 1972 (Delphacidae) | Iphicara Emeljanov, 1978 (Dictyopharidae) |
| Idiomyctus Williams, 1981 (Tropiduchidae) | Ipsemysidia Broomfield, 1985 (Derbidae) |
| Idiosemus Berg, 1883 (Delphacidae) | Ipsnola Signoret, 1885 (Derbidae) |
| Idiosystatus Berg, 1883 (Delphacidae) | Iranodus Dlabola, 1980 (Issidae) |
| Idume Stål, 1866 (Flatidae) | Ishiharanus Hori, 1969 (Issidae) |
| Igava Melichar, 1912 (Dictyopharidae) | Ishiharodelphax Kwon, 1982 (Delphacidae) |
| Ijagar Medler, 2000 (Flatidae) | Isobium Melichar, 1906 (Ricaniidae) |
| Ikonza Hesse, 1925 (Issidae) | Isodaemon Fennah, 1969 (Achilidae) |
| Ilburnia White, 1878 (Delphacidae) | Isodelphax Fennah, 1963 (Delphacidae) |
| Ileifea Banaszkiewicz & Szwedo, 2005 (Derbidae) | Isogaetis Fennah, 1969 (Delphacidae) |
| Ilesia Fennah, 1942 (Flatidae) | Isporisa Walker, 1857 (Tropiduchidae) |
| Ilva Stål, 1866 (Achilidae) | Isporisella Baker, 1927 (Tropiduchidae) |
| Incasa Gnezdilov & O'Brien, 2008 (Issidae) | Issarius Metcalf, 1950 (Nogodinidae) |
| Indodictyophara Liang & Song, 2012 (Dictyopharidae) | Issedonia Emeljanov, 1972 (Delphacidae) |
| Indogaetulia Schmidt, 1919 (Tropiduchidae) | Issidius Puton, 1898 (Nogodinidae) |
| Indolipa Emeljanov, 2001 (Cixiidae) | Issidius Puton, 1898 (Nogodinidae) |
| Indomiasa Song, Webb & Liang, 2014 (Dictyopharidae) | Issites† Haupt, 1956 (Issidae) |
| Indorupex Fennah, 1965 (Achilidae) | Issomimus Jacobi, 1910 (Cixiidae) |
| Indozuriel Fennah, 1975 (Delphacidae) | Issopulex China & Fennah, 1960 (Caliscelidae) |
| Indrival Fennah, 1978 (Dictyopharidae) | Issus Brullé, 1832 (Issidae) |
| Inflatodus Dlabola, 1982 (Issidae) | Itatiayana Metcalf, 1952 (Caliscelidae) |
| Ingensala† Luo, Song & Szwedo, 2022 (Inoderbidae†) | Ithma Fennah, 1969 (Cixiidae) |
| Ingoma Fennah, 1954 (Tropiduchidae) | Ityraea Stål, 1866 (Flatidae) |
| Inkewana Hesse, 1925 (Tropiduchidae) | Itzalana Distant, 1905 (Fulgoridae) |
| Innobindus Jacobi, 1928 (Cixiidae) | Iubsoda Nast, 1975 (Delphacidae) |
| Inoderbe† Shcherbakov & Emeljanov, 2021 (Inoderbidae†) | Iuiuia Hoch & Ferreira, 2016 (Kinnaridae) |
| Insulisia Bonfils & Attié, 1998 (Meenoplidae) | Izella Fennah, 1965 (Delphacidae) |
| Insulume Medler, 1999 (Flatidae) |
