 | Gabon |
 | Galicia |
 | Galmudug |
 | The Gambia |
 | Gdańsk |
 | Genève |
 | Genova |
 | Georgia (US state) |
 | Georgia (1918-1921) |
 | Georgia (since 1991) |
 | Germany (1848-1867) |
 | Germany (North, 1867-1870) |
 | Germany (1871-1945) |
 | Germany (1945-1949) |
| Germany (Federal Republic) |
 | German Democratic Republic |
 | German East Africa |
 | German New Guinea |
 | German South-West Africa |
 | Ghana |
 | Gibraltar |
 | Gilbert & Ellice Islands |
 | Glarus |
 | Goiás |
 | Gold Coast |
 | Graubünden |
 | Great Britain |
 | Greece |
 | Greek People's Liberation Army |
 | Greenland |
 | Grenada |
 | Guadeloupe |
 | Guam |
 | Guangdong |
 | Guatemala |
 | Guernsey |
 | Guinea |
 | Guinea-Bissau |
 | Guinea, Equatorial |
 | Guyana |
 | Gumuljina |
 | Guyana (French) |
 | Gwalior |