word | | Country name |
| Union | Comoros | conventional long form: Union of the Comoros conventional short form: Comoros local long form: Udzima wa Komori (Comorian); Union des Comores (French); Jumhuriyat al Qamar al Muttahidah (Arabic) local short form: Komori ... |
| Union | South Africa | conventional long form: Republic of South Africa conventional short form: South Africa former: Union of South Africa abbreviation: RSA |
| United | Cameroon | ... Cameroon conventional short form: Cameroon local long form: Republique du Cameroun/Republic of Cameroon local short form: Cameroun/Cameroon former: French Cameroon, British Cameroon, Federal Republic of Cameroon, United Republic of Cameroon |
| United | Egypt | conventional long form: Arab Republic of Egypt conventional short form: Egypt local long form: Jumhuriyat Misr al-Arabiyah local short form: Misr former: United Arab Republic (with Syria) |
| United | Mexico | conventional long form: United Mexican States conventional short form: Mexico local long form: Estados Unidos Mexicanos local short form: Mexico |
| United | Syria | conventional long form: Syrian Arab Republic conventional short form: Syria local long form: Al Jumhuriyah al Arabiyah as Suriyah local short form: Suriyah former: United Arab Republic (with Egypt) |
| United | Tanzania | conventional long form: United Republic of Tanzania conventional short form: Tanzania local long form: Jamhuri ya Muungano wa Tanzania local short form: Tanzania former: United Republic of Tanganyika and Zanzibar |
| United | 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 |
| United | 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 |
| United | United States | conventional long form: United States of America conventional short form: United States abbreviation: US or USA |
| United | Virgin Islands | conventional long form: United States Virgin Islands conventional short form: Virgin Islands former: Danish West Indies abbreviation: USVI |