| Code | Name | Continent | Region |
| UGA | Uganda | Africa | Eastern Africa |
| UKR | Ukraine | Europe | Eastern Europe |
| UMI | United States Minor Outlying Islands | Oceania | Micronesia/Caribbean |
| URY | Uruguay | South America | South America |
| USA | United States | North America | North America |
| UZB | Uzbekistan | Asia | Southern and Central Asia |
| VAT | Holy See (Vatican City State) | Europe | Southern Europe |
| VCT | Saint Vincent and the Grenadines | North America | Caribbean |
| VEN | Venezuela | South America | South America |
| VGB | Virgin Islands, British | North America | Caribbean |
| VIR | Virgin Islands, U.S. | North America | Caribbean |
| VNM | Vietnam | Asia | Southeast Asia |
| VUT | Vanuatu | Oceania | Melanesia |
| WLF | Wallis and Futuna | Oceania | Polynesia |
| WSM | Samoa | Oceania | Polynesia |
| YEM | Yemen | Asia | Middle East |
| YUG | Yugoslavia | Europe | Southern Europe |
| ZAF | South Africa | Africa | Southern Africa |
| ZMB | Zambia | Africa | Eastern Africa |
| ZWE | Zimbabwe | Africa | Eastern Africa |