| Abbreviation | Definition |
|---|---|
| USVI | United States Virgin Islands |
| UTD | Timorese Democratic Union |
| UY | Uruguay |
| UZ | Uzbekistan |
| UZB | Uzbekistan |
| VA | Holy See (Vatican City State) |
| VC | Saint Vincent & Grenadines |
| VC | Viet Cong |
| VE | Venezuela |
| VG | Virgin Islands (British) |
| VGB | British Virgin Islands |
| VIE | Vietnam |
| VN | Vietnam |
| VRK | Virtual Republic of Kansai |
| VU | Vanuatu |
| VZA | Venezuela |
| WA | wasiq afridi |
| WBC | Western Balkan Countries |
| WBG | World Bank Group |
| WCO | World Customs Organization |