| Country | Nationality |
| Gambia, The | noun: Gambian(s) adjective: Gambian |
| Gaza Strip | noun: NA adjective: NA |
| Georgia | noun: Georgian(s) adjective: Georgian |
| Germany | noun: German(s) adjective: German |
| Ghana | noun: Ghanaian(s) adjective: Ghanaian |
| Gibraltar | noun: Gibraltarian(s) adjective: Gibraltar |
| Greece | noun: Greek(s) adjective: Greek |
| Greenland | noun: Greenlander(s) adjective: Greenlandic |
| Grenada | noun: Grenadian(s) adjective: Grenadian |
| Guam | noun: Guamanian(s) (US citizens) adjective: Guamanian |
| Guatemala | noun: Guatemalan(s) adjective: Guatemalan |
| Guernsey | noun: Channel Islander(s) adjective: Channel Islander |
| Guinea | noun: Guinean(s) adjective: Guinean |
| Guinea-Bissau | noun: Guinean(s) adjective: Guinean |
| Guyana | noun: Guyanese (singular and plural) adjective: Guyanese |
| Haiti | noun: Haitian(s) adjective: Haitian |
| Heard Island and McDonald Islands | void |
| Holy See (Vatican City) | noun: none adjective: none |
| Honduras | noun: Honduran(s) adjective: Honduran |
| Hong Kong | noun: Chinese/Hong Konger adjective: Chinese/Hong Kong |
| Hungary | noun: Hungarian(s) adjective: Hungarian |
| Iceland | noun: Icelander(s) adjective: Icelandic |
| India | noun: Indian(s) adjective: Indian |