word | | Country name |
| short | Ukraine | conventional long form: none conventional short form: Ukraine local long form: none local short form: Ukrayina former: Ukrainian National Republic, Ukrainian State, Ukrainian Soviet Socialist Republic |
| short | United Arab Emirates | conventional long form: United Arab Emirates conventional short form: none local long form: Al Imarat al Arabiyah al Muttahidah local short form: none former: Trucial Oman, Trucial States abbreviation: UAE |
| short | United Kingdom | conventional long form: United Kingdom of Great Britain and Northern Ireland; note - Great Britain includes England, Scotland, and Wales conventional short form: United Kingdom abbreviation: UK |
| short | United States | conventional long form: United States of America conventional short form: United States abbreviation: US or USA |
| short | United States Pacific Island Wildlife Refuges | conventional long form: none conventional short form: Baker Island; Howland Island; Jarvis Island; Johnston Atoll; Kingman Reef; Midway Islands; Palmyra Atoll |
| short | Uruguay | conventional long form: Oriental Republic of Uruguay conventional short form: Uruguay local long form: Republica Oriental del Uruguay local short form: Uruguay former: Banda Oriental, Cisplatine Province |
| short | Uzbekistan | conventional long form: Republic of Uzbekistan conventional short form: Uzbekistan local long form: Ozbekiston Respublikasi local short form: Ozbekiston former: Uzbek Soviet Socialist Republic |
| short | Vanuatu | conventional long form: Republic of Vanuatu conventional short form: Vanuatu local long form: Ripablik blong Vanuatu local short form: Vanuatu former: New Hebrides |
| short | Venezuela | conventional long form: Bolivarian Republic of Venezuela conventional short form: Venezuela local long form: Republica Bolivariana de Venezuela local short form: Venezuela |
| short | Vietnam | conventional long form: Socialist Republic of Vietnam conventional short form: Vietnam local long form: Cong Hoa Xa Hoi Chu Nghia Viet Nam local short form: Viet Nam abbreviation: SRV |
| short | Virgin Islands | conventional long form: United States Virgin Islands conventional short form: Virgin Islands former: Danish West Indies abbreviation: USVI |
| short | Wake Island | conventional long form: none conventional short form: Wake Island |
| short | Wallis and Futuna | conventional long form: Territory of the Wallis and Futuna Islands conventional short form: Wallis and Futuna local long form: Territoire des Iles Wallis et Futuna local short form: Wallis et Futuna |
| short | West Bank | conventional long form: none conventional short form: West Bank |
| short | Western Sahara | conventional long form: none conventional short form: Western Sahara former: Spanish Sahara |
| short | Yemen | conventional long form: Republic of Yemen conventional short form: Yemen local long form: Al Jumhuriyah al Yamaniyah local short form: Al Yaman former: Yemen Arab Republic [Yemen (Sanaa) or North Yemen] and ... |
| short | Zambia | conventional long form: Republic of Zambia conventional short form: Zambia former: Northern Rhodesia |
| short | Zimbabwe | conventional long form: Republic of Zimbabwe conventional short form: Zimbabwe former: Southern Rhodesia, Rhodesia |
| Shqiperia | Albania | conventional long form: Republic of Albania conventional short form: Albania local long form: Republika e Shqiperise local short form: Shqiperia former: People's Socialist Republic of Albania |
| Shqiperise | Albania | conventional long form: Republic of Albania conventional short form: Albania local long form: Republika e Shqiperise local short form: Shqiperia former: People's Socialist Republic of Albania |
| Shri | Sri Lanka | ... long form: Democratic Socialist Republic of Sri Lanka conventional short form: Sri Lanka local long form: Shri Lamka Prajatantrika Samajaya di Janarajaya/Ilankai Jananayaka Choshalichak Kutiyarachu local short form: Shri Lamka/Ilankai ... |
| Siam | Thailand | conventional long form: Kingdom of Thailand conventional short form: Thailand local long form: Ratcha Anachak Thai local short form: Prathet Thai former: Siam |