| Code | Name | Continent | Region |
| GIN | Guinea | Africa | Western Africa |
| GLP | Guadeloupe | North America | Caribbean |
| GMB | Gambia | Africa | Western Africa |
| GNB | Guinea-Bissau | Africa | Western Africa |
| GNQ | Equatorial Guinea | Africa | Central Africa |
| GRC | Greece | Europe | Southern Europe |
| GRD | Grenada | North America | Caribbean |
| GRL | Greenland | North America | North America |
| GTM | Guatemala | North America | Central America |
| GUF | French Guiana | South America | South America |
| GUM | Guam | Oceania | Micronesia |
| GUY | Guyana | South America | South America |
| HKG | Hong Kong | Asia | Eastern Asia |
| HMD | Heard Island and McDonald Islands | Antarctica | Antarctica |
| HND | Honduras | North America | Central America |
| HRV | Croatia | Europe | Southern Europe |
| HTI | Haiti | North America | Caribbean |
| HUN | Hungary | Europe | Eastern Europe |
| IDN | Indonesia | Asia | Southeast Asia |
| IND | India | Asia | Southern and Central Asia |