United Arab Emirates
none
United Kingdom
18 years of age; universal
United States
18 years of age; universal
Uruguay
18 years of age; universal and compulsory
Uzbekistan
18 years of age; universal
Vanuatu
18 years of age; universal
Venezuela
18 years of age; universal
Vietnam
18 years of age; universal
Virgin Islands
18 years of age; universal; note - island residents
are US citizens but do not vote in US presidential elections
Wallis and Futuna
18 years of age; universal