| Krater | Diameter | Eponym | F/B | Tidsalder | Bemærkning |
|---|
| G. Bond | 20 km | George Phillips Bond (1826-1865) | | | |
| Gadomski | 65 km | Jan Gadomski (1889-1966) | | | |
| Gagarin | 265 km | Yuri Gagarin (1934-1968) | | | |
| Galen | 10 km | Claudius Galen (circa 129-200) | | | |
| Galilaei | 15 km | Galileo Galilei (1564-1642) | | | |
| Galle | 21 km | Johann Gottfried Galle (1812-1910) | | | |
| Galois | 222 km | Évariste Galois (1811-1832) | | | |
| Galvani | 80 km | Luigi Galvani (1737-1798) | | | |
| Gambart | 25 km | Jean Félix Adolphe Gambart (1800-1836) | | | |
| Gamow | 129 km | George Gamow (1904-1968) | | | |
| Ganskiy | 43 km | Aleksey P. (Hansky) Ganskiy (1870-1908) | | | |
| Ganswindt | 74 km | Hermann Ganswindt (1856-1934) | | | |
| Garavito | 74 km | Julio Garavito Armero (1865-1920) | | | |
| Gardner | 18 km | Irvine Clifton Gardner (1889-1972) | | | |
| Gärtner | 115 km | Christian Gärtner (circa 1750-1813) | | | |
| Gassendi | 101 km | Pierre Gassendi (1592-1655) | | | |
| Gaston | 2 km | (French male name) | | | |
| Gaudibert | 34 km | Casimir Marie Gaudibert (1823-1901) | | | |
| Gauricus | 79 km | Luca Gaurico (1476-1558) | | | |
| Gauss | 177 km | Carl Friedrich Gauss (1777-1855) | | | |
| Gavrilov | 60 km | Aleksandr I. Gavrilov (1884-1955) | | - | |
| Igor B. Gavrilov (1928-1982) |
| Gay-Lussac | 26 km | Joseph-Louis Gay-Lussac (1778-1850) | | | |
| Geber | 44 km | Gabir Ben Aflah (unknown-circa 1145) | | | |
| Geiger | 34 km | Johannes Hans Wilhelm Geiger (1882-1945) | | | |
| Geissler | 16 km | Heinrich Geissler (1814-1879) | | | |
| Geminus | 85 km | Geminus (unknown-circa 70 B.C.) | | | |
| Gemma Frisius | 87 km | Reinier Jemma (1508-1555) | | | |
| Gerard | 90 km | Alexander Gerard (1792-1839) | | | |
| Gerasimovich | 86 km | Boris P. Gerasimovich (1889-1937) | | | |
| Gernsback | 48 km | Hugo Gernsback (1884-1967) | | | |
| Gibbs | 76 km | Josiah Willard Gibbs (1839-1903) | | | |
| Gilbert | 112 km | Grove Karl Gilbert (1843-1918) | | - | |
| William Gilbert (1544-1603) |
| Gill | 66 km | David Gill (1843-1914) | | | |
| Ginzel | 55 km | Friedrich Karl Ginzel (1850-1926) | | | |
| Gioja | 41 km | Flavio Gioja (flourished 1302) | | | |
| Giordano Bruno | 22 km | Giordano Bruno (1548-1600) | | | |
| Glaisher | 15 km | James Glaisher (1809-1903) | | | |
| Glauber | 15 km | Johann Rudolf Glauber (ca. 1603-1670) | | | |
| Glazenap | 43 km | Sergej Pavlovich von Glazenap (1848-1937) | | | |
| Glushko | 43 km | Valentin Petrovitch Glushko (1908-1989) | | | |
| Goclenius | 72 km | Rudolf Goclenius, Jr. (1572-1621) | | | |
| Goddard | 89 km | Robert H. Goddard (1882-1945) | | | |
| Godin | 34 km | Louis Godin (1704-1760) | | | |
| Goldschmidt | 113 km | Hermann Goldschmidt (1802-1866) | | | |
| Golgi | 5 km | Camillo Golgi (1843-1926) | | | |
| Golitsyn | 36 km | Boris Borisovich Golitsyn (1862-1916) | | | |
| Golovin | 37 km | Nicholas Erasmus Golovin (1912-1969) | | | |
| Goodacre | 46 km | Walter Goodacre (1856-1938) | | | |
| Gore | 8.5 km | John Ellard Gore (1845 - 1910) | | | |
| Gould | 34 km | Benjamin Apthorp Gould (1824-1896) | | | |
| Grace | 1 km | (English female name) | | | |
| Grachev | 35 km | Andrej D. Grachev (1900-1964) | | | |
| Graff | 36 km | Kasimir Romuald Graff (1878-1950) | | | |
| Grave | 40 km | Dmitry Aleksandrovich Grave (1863-1939) | | - | |
| Ivan Platonovich Grave (1874-1960) |
| Greaves | 13 km | William Michael Herbert Greaves (1897-1955) | | | |
| Green | 65 km | George Green (1793-1841) | | | |
| Gregory | 67 km | James Gregory (1638-1675) | | | |
| Grigg | 36 km | John Grigg (1838-1920) | | | |
| Grimaldi | 172 km | Francesco Maria Grimaldi (1618-1663) | | | |
| Grignard | 5.0 km | Victor Grignard (1871-1935) | | | |
| Grissom | 58 km | Virgil "Gus" I. Grissom (1926-1967) | | | |
| Grotrian | 37 km | Walter Grotrian (1890-1954) | | | |
| Grove | 28 km | Sir William Robert Grove (1811-1896) | | | |
| Gruemberger | 93 km | Christoph Grienberger (1561-1636) | | | |
| Gruithuisen | 15 km | Franz von Gruithuisen (1774-1852) | | | |
| Guericke | 63 km | Otto von Guericke (1602-1686) | | | |
| Guillaume | 57 km | Charles Edouard Guillaume (1861-1938) | | | |
| Gullstrand | 43 km | Allvar Gullstrand (1862-1930) | | | |
| Gum | 54 km | Colin Stanley Gum (1924-1960) | | | |
| Gutenberg | 74 km | Johann Gutenberg (ca. 1398-1468) | | | |
| Guthnick | 36 km | Paul Guthnick (1879-1947) | | | |
| Guyot | 92 km | Arnold Henry Guyot (1807-1884) | | | |
| Gyldén | 47 km | Hugo Gyldén (1841-1896) | | | |