Galasastra Breddin, 1903, Genus – synonym of Elasmucha Stål, 1864, Genus
GALEATINI Blatchley, 1926, Subfamilia – synonym of Tinginae Laporte, 1832, Subfamilia
Galgulidae Billberg, 1820, Familia – homonym of Gelastocoridae Kirkaldy, 1897, Familia
Gallobelgicus Distant, 1906, Genus
Gallobelicus Distant, 1904a, Genus – synonym of Nesidiocoris Kirkaldy, 1902, Genus
Galostha Amyot & Serville, 1843, Genus – synonym of Chrysocoris Hahn, 1834, Genus
Gampsoacantha Josifov & Štusák, 1987, Genus
Gampsocorinae Southwood & Leston, 1959, Subfamilia
Garamans Dispons, 1963, Genus – synonym of Barberocoris Miller, 1957, Genus
Garsauriinae Froeschner, 1960, Subfamilia
Gastraulax Herrich-Schaeffer, 1844, Genus – synonym of Bathycoelia Amyot & Serville, 1843, Genus
Gastrodes Westwood, 1840, Genus
Gastroploeus A. Costa, 1864e, Genus – synonym of Epidaus Stål, 1859, Genus
Gastroxys Horváth, 1904, Genus – synonym of Gynenica Dallas, 1851, Genus
Gediocoris Wagner, 1964, Genus
Gelastocoridae Kirkaldy, 1897, Familia
Geobia Montrouzier, 1858, Genus – synonym of Adrisa Amyot & Serville, 1843, Genus
Geoblissus Hidaka, 1959, Genus – synonym of Blissus Burmeister, 1835, Genus
Geocoridae: Kirkaldy, 1902, Familia – synonym of Lygaeidae Schilling, 1829, Familia
Geocorinae Dahlbom, 1851, Subfamilia
Geotomus Mulsant & Rey, 1866, Genus
Gerastratus Distant, 1910, Genus – synonym of Metrocoris Mayr, 1865, Genus
Gerhardiella Poppius, 1911d, Genus – synonym of Plagiognathus Fieber, 1858, Genus
Germalinae Montandon, 1907, Subfamilia – synonym of Geocorinae Dahlbom, 1851, Subfamilia
Gerrinae Leach, 1815, Subfamilia
Gestroiella Montandon, 1897, Genus
Gigantometra Hungerford & Matsuda, 1958, Genus
Gigantomiris Miyamoto & Yasunaga, 1988, Genus
Gismunda Distant, 1904d, Genus – synonym of Chilocrates Horváth, 1889, Genus
Glaenocorisa Thomson, 1869, Genus
Glaenocorixa Puton, 1886, Genus – misspelled name of Glaenocorisa Thomson, 1869, Genus
Glaphyrocoris Reuter, 1903, Genus
Glaucias Kirkaldy, 1908, Genus
Glaucopterum Wagner, 1963, Genus
Glenocorixa Bergroth, 1905, Genus – misspelled name of Glaenocorisa Thomson, 1869, Genus
Globiceps Lepeletier & Serville, 1825, Genus
Globocoris Hahn, 1834, Genus – synonym of Coptosoma Laporte, 1833, Genus
Glochocoris Usinger & Matsuda, 1959, Genus
Glossoaspis Blatchley, 1925, Genus – synonym of Nerthra Say, 1832, Genus
Glossopelta Handlirsch, 1897, Genus
Glossopeltis Reuter, 1903, Genus
Glymmatophora Stål, 1854, Genus
Glymmatophoroides Miller, 1954, Genus – synonym of Glymmatophora Stål, 1854, Genus
Glypheria Mulsant & Rey, 1866, Genus – synonym of Ventocoris Hahn, 1834, Genus
Gnathoconus Fieber, 1860b, Genus – synonym of Legnotus Schiødte, 1848, Genus
Gobisa Gorski, 1852, Genus – synonym of Eysarcoris Hahn, 1834, Genus
Godefridus Distant, 1904, Genus – synonym of Scotomedes Stål, 1873, Genus
Gollneria Carvalho, 1983, Genus
Gombura Schouteden, 1913, Genus – synonym of Capyella Breddin, 1907, Genus
Gomesius Distant, 1903, Genus – synonym of Gomesius Distant, 1903, Genus
Gomphocranum Jakovlev, 1877, Genus
Gonianotus Fieber, 1860, Genus
Goniocerus Douglas & Scott, 1876, Genus – misspelled name of Gonocerus Berthold, 1827, Genus
Gonocerus Berthold, 1827, Genus
Gonopsimorpha Yang, 1934, Genus
Gonopsis Amyot & Serville, 1843, Genus
Gonsalvus Distant, 1903b, Genus – synonym of Proderus Fieber, 1860, Genus
Gonycentrum Bergroth, 1898, Genus
Gordonerius Distant, 1900, Genus – synonym of Perillus Stål, 1862, Genus
Gotocapsus Yasunaga & Nakatani, 1998b, Genus – synonym of Warrisia Carvalho, 1986, Genus
Gotoshinomiris Yasunaga, 2016, Genus
Gralliclava Dolling, 1978, Genus
Graphoraglius Wagner, 1961, Genus
Graphosoma Laporte, 1833, Genus
Graptolomus Stål, 1868, Genus – synonym of Lygaeus Fabricius, 1794, Genus
Graptopeltus Stål, 1872, Genus
Graptosphodrus Stål, 1867, Genus – synonym of Sphedanolestes Stål, 1867, Genus
Graptostethus Stål, 1868, Genus
Gregarivelia Tamanini, 1949, Genus – synonym of Velia Latreille, 1804, Genus
Gressittmiris Carvalho, 1988, Genus – synonym of Tolongia Poppius, 1915, Genus
Grossaria Kumar, 1974, Genus – synonym of Elasmucha Stål, 1864, Genus
Gryllocoris Baerensprung, 1859, Genus – synonym of Aphanosoma A. Costa, 1842, Genus
Grypocephalus Hsiao, 1963, Genus
Grypocoris Douglas & Scott, 1868, Genus
Gudea Distant, 1911, Genus – synonym of Pentatoma Olivier, 1789, Genus
Guisardinus Carvalho, 1979, Genus