  | 
Uganda | 
 English (official), Swahili, Luganda, Ateso, Luo | 
  | 
Ukraine | 
 Ukrainian | 
  | 
United Arab Emirates | 
 Arabic (official), English as a second language | 
  | 
United Kingdom | 
 English, Welsh, Scots Gaelic | 
  | 
United Nations | 
 Primarily English and French (officially?) | 
  | 
United States of America | 
English,  plus sizable Spanish-speaking minority | 
  | 
Uruguay | 
 Spanish | 
  | 
Uzbekistan | 
 Uzbek 74.3%, Russian 14.2%, Tajik 4.4%, other 7.1% | 
  | 
Vanuatu | 
 Bislama (a Melanesian pidgin English), English, French (all 3 official) | 
  | 
Vatican City (Holy See) | 
 Latin, Italian, and various other languages | 
  | 
Venezuela | 
 Spanish (official), various indigenous languages in the remote interior | 
  | 
Vexillological Association | 
 International languages | 
  | 
Vietnam | 
 Vietnamese (official), French, English, Khmer, Chinese | 
  | 
Virgin Islands, British | 
 English  | 
  | 
Virgin Islands, US | 
 English  | 
  | 
Wales | 
 Welsh, English  | 
  | 
Wallis Futuna | 
 French  | 
  | 
Western Sahara | 
 Hassaniya Arabic, Moroccan Arabic | 
  | 
Western Samoa, now Samoa  | 
 Samoan and English  | 
  | 
Yemen | 
 Arabic | 
  | 
Yugoslavia | 
 Serbian 95%, Albanian 5%. What was once known as Serbo-Croatian is now known as Serbian, Croatian, or Bosnian, depending on the speaker's political and ethnic affiliation. It is written in Latin and Cyrillic forms. | 
  | 
Zambia | 
 English (official) and local dialects | 
  | 
Zimbabwe | 
 English (official), Ndebele, Shona (85%) |