| Afghanistan |
18 years of age; universal |
| Albania |
18 years of age; universal |
| Algeria |
18 years of age; universal |
| American Samoa |
18 years of age; universal |
| Andorra |
18 years of age; universal |
| Angola |
18 years of age; universal |
| Anguilla |
18 years of age; universal |
| Antigua and Barbuda |
18 years of age; universal |
| Argentina |
18 years of age; universal and compulsory |
| Armenia |
18 years of age; universal |
| Aruba |
18 years of age; universal |
| Australia |
18 years of age; universal and compulsory |
| Austria |
18 years of age; universal |
| Azerbaijan |
18 years of age; universal |
| Bahamas, The |
18 years of age; universal |
| Bahrain |
20 years of age; universal |
| Bangladesh |
18 years of age; universal |
| Barbados |
18 years of age; universal |
| Belarus |
18 years of age; universal |
| Belgium |
18 years of age; universal and compulsory |
| Belize |
18 years of age; universal |
| Benin |
18 years of age; universal |
| Bermuda |
18 years of age; universal |
| Bhutan |
each family has one vote in village-level elections |
| Bolivia |
18 years of age, universal and compulsory (married); 21 years of age, universal and compulsory (single) |
| Bosnia and Herzegovina |
18 years of age, universal |
| Botswana |
18 years of age; universal |
| Brazil |
voluntary between 16 and 18 years of age and over 70; compulsory over 18 and under 70 years of age; note - military conscripts do not vote |
| British Virgin Islands |
18 years of age; universal |
| Brunei |
none |
| Bulgaria |
18 years of age; universal |
| Burkina Faso |
universal |
| Burma |
18 years of age; universal |
| Burundi |
NA years of age; universal (adult) |
| Cambodia |
18 years of age; universal |
| Cameroon |
20 years of age; universal |
| Canada |
18 years of age; universal |
| Cape Verde |
18 years of age; universal |
| Cayman Islands |
18 years of age; universal |
| Central African Republic |
21 years of age; universal |
| Chad |
18 years of age; universal |
| Chile |
18 years of age; universal and compulsory |
| China |
18 years of age; universal |
| Cocos (Keeling) Islands |
NA |
| Colombia |
18 years of age; universal |
| Comoros |
18 years of age; universal |
| Congo, Democratic Republic of the |
18 years of age; universal and compulsory |
| Congo, Republic of the |
18 years of age; universal |
| Cook Islands |
NA years of age; universal (adult) |
| Costa Rica |
18 years of age; universal and compulsory |
| Cote d'Ivoire |
18 years of age; universal |
| Croatia |
18 years of age; universal (16 years of age, if employed) |
| Cuba |
16 years of age; universal |
| Cyprus |
18 years of age; universal |
| Czech Republic |
18 years of age; universal |
| Denmark |
18 years of age; universal |
| Djibouti |
18 years of age; universal |
| Dominica |
18 years of age; universal |
| Dominican Republic |
18 years of age, universal and compulsory; married persons regardless of age; note - members of the armed forces and national police cannot vote |
| Ecuador |
18 years of age; universal, compulsory for literate persons ages 18-65, optional for other eligible voters |
| Egypt |
18 years of age; universal and compulsory |
| El Salvador |
18 years of age; universal |
| Equatorial Guinea |
18 years of age; universal |
| Eritrea |
18 years of age; universal |
| Estonia |
18 years of age; universal for all Estonian citizens |
| Ethiopia |
18 years of age; universal |
| European Union |
18 years of age; universal |
| Falkland Islands (Islas Malvinas) |
18 years of age; universal |
| Faroe Islands |
18 years of age; universal |
| Fiji |
21 years of age; universal |
| Finland |
18 years of age; universal |
| France |
18 years of age; universal |
| French Polynesia |
18 years of age; universal |
| Gabon |
21 years of age; universal |
| Gambia, The |
18 years of age; universal |
| Georgia |
18 years of age; universal |
| Germany |
18 years of age; universal |
| Ghana |
18 years of age; universal |
| Gibraltar |
18 years of age; universal; and British citizens who have been residents six months or more |
| Greece |
18 years of age; universal and compulsory |
| Greenland |
18 years of age; universal |
| Grenada |
18 years of age; universal |
| Guam |
18 years of age; universal; US citizens, but do not vote in US presidential elections |
| Guatemala |
18 years of age; universal; note - active duty members of the armed forces may not vote and are restricted to their barracks on election day |
| Guernsey |
18 years of age; universal |
| Guinea |
18 years of age; universal |
| Guinea-Bissau |
18 years of age; universal |
| Guyana |
18 years of age; universal |
| Haiti |
18 years of age; universal |
| Holy See (Vatican City) |
limited to cardinals less than 80 years old |
| Honduras |
18 years of age; universal and compulsory |
| Hong Kong |
direct election 18 years of age; universal for permanent residents living in the territory of Hong Kong for the past seven years; indirect election limited to about 200,000 members of functional constituencies and an 800-member election committee drawn from broad regional groupings, municipal organizations, and central government bodies |
| Hungary |
18 years of age; universal |
| Iceland |
18 years of age; universal |
| India |
18 years of age; universal |
| Indonesia |
17 years of age; universal and married persons regardless of age |
| Iran |
18 years of age; universal |
| Iraq |
18 years of age; universal |
| Ireland |
18 years of age; universal |
| Isle of Man |
16 years of age; universal |
| Israel |
18 years of age; universal |
| Italy |
18 years of age; universal (except in senatorial elections, where minimum age is 25) |
| Jamaica |
18 years of age; universal |
| Japan |
20 years of age; universal |
| Jersey |
18 years of age; universal |
| Jordan |
18 years of age; universal |
| Kazakhstan |
18 years of age; universal |
| Kenya |
18 years of age; universal |
| Kiribati |
18 years of age; universal |
| Korea, North |
17 years of age; universal |
| Korea, South |
19 years of age; universal |
| Kuwait |
NA years of age; universal (adult); note - males in the military or police are not allowed to vote; adult females were allowed to vote as of 16 May 2005; all voters must have been citizens for 20 years |
| Kyrgyzstan |
18 years of age; universal |
| Laos |
18 years of age; universal |
| Latvia |
18 years of age; universal for Latvian citizens |
| Lebanon |
21 years of age; compulsory for all males; authorized for women at age 21 with elementary education |
| Lesotho |
18 years of age; universal |
| Liberia |
18 years of age; universal |
| Libya |
18 years of age; universal and compulsory |
| Liechtenstein |
18 years of age; universal |
| Lithuania |
18 years of age; universal |
| Luxembourg |
18 years of age; universal and compulsory |
| Macau |
direct election 18 years of age, universal for permanent residents living in Macau for the past seven years; indirect election limited to organizations registered as "corporate voters" (257 are currently registered) and a 300-member Election Committee drawn from broad regional groupings, municipal organizations, and central government bodies |
| Macedonia |
18 years of age; universal |
| Madagascar |
18 years of age; universal |
| Malawi |
18 years of age; universal |
| Malaysia |
21 years of age; universal |
| Maldives |
21 years of age; universal |
| Mali |
18 years of age; universal |
| Malta |
18 years of age; universal |
| Marshall Islands |
18 years of age; universal |
| Mauritania |
18 years of age; universal |
| Mauritius |
18 years of age; universal |
| Mayotte |
18 years of age; universal |
| Mexico |
18 years of age; universal and compulsory (but not enforced) |
| Micronesia, Federated States of |
18 years of age; universal |
| Moldova |
18 years of age; universal |
| Monaco |
18 years of age; universal |
| Mongolia |
18 years of age; universal |
| Montenegro |
18 years of age; universal |
| Montserrat |
18 years of age; universal |
| Morocco |
18 years of age; universal (as of January 2003) |
| Mozambique |
18 years of age; universal |
| Namibia |
18 years of age; universal |
| Nauru |
20 years of age; universal and compulsory |
| Nepal |
18 years of age; universal |
| Netherlands |
18 years of age; universal |
| Netherlands Antilles |
18 years of age; universal |
| New Caledonia |
18 years of age; universal |
| New Zealand |
18 years of age; universal |
| Nicaragua |
16 years of age; universal |
| Niger |
18 years of age; universal |
| Nigeria |
18 years of age; universal |
| Niue |
18 years of age; universal |
| Norfolk Island |
18 years of age; universal |
| Northern Mariana Islands |
18 years of age; universal; indigenous inhabitants are US citizens but do not vote in US presidential elections |
| Norway |
18 years of age; universal |
| Oman |
21 years of age; universal; note - members of the military and security forces are not allowed to vote |
| Pakistan |
18 years of age; universal; joint electorates and reserved parliamentary seats for women and non-Muslims |
| Palau |
18 years of age; universal |
| Panama |
18 years of age; universal and compulsory |
| Papua New Guinea |
18 years of age; universal |
| Paraguay |
18 years of age; universal and compulsory up to age 75 |
| Peru |
18 years of age; universal and compulsory until the age of 70; note - for the first time in recent elections, members of the military and national police were eligible to vote in the 2006 elections |
| Philippines |
18 years of age; universal |
| Pitcairn Islands |
18 years of age; universal with three years residency |
| Poland |
18 years of age; universal |
| Portugal |
18 years of age; universal |
| Puerto Rico |
18 years of age; universal; island residents are US citizens but do not vote in US presidential elections |
| Qatar |
18 years of age; universal |
| Romania |
18 years of age; universal |
| Russia |
18 years of age; universal |
| Rwanda |
18 years of age; universal |
| Saint Barthelemy |
18 years of age, universal |
| Saint Helena |
NA years of age |
| Saint Kitts and Nevis |
18 years of age; universal |
| Saint Lucia |
18 years of age; universal |
| Saint Martin |
18 years of age, universal |
| Saint Pierre and Miquelon |
18 years of age; universal |
| Saint Vincent and the Grenadines |
18 years of age; universal |
| Samoa |
21 years of age; universal |
| San Marino |
18 years of age; universal |
| Sao Tome and Principe |
18 years of age; universal |
| Saudi Arabia |
21 years of age; male |
| Senegal |
18 years of age; universal |
| Serbia |
18 years of age; universal |
| Seychelles |
17 years of age; universal |
| Sierra Leone |
18 years of age; universal |
| Singapore |
21 years of age; universal and compulsory |
| Slovakia |
18 years of age; universal |
| Slovenia |
18 years of age; universal (16 years of age, if employed) |
| Solomon Islands |
21 years of age; universal |
| Somalia |
18 years of age; universal |
| South Africa |
18 years of age; universal |
| Spain |
18 years of age; universal |
| Sri Lanka |
18 years of age; universal |
| Sudan |
17 years of age; universal |
| Suriname |
18 years of age; universal |
| Swaziland |
18 years of age |
| Sweden |
18 years of age; universal |
| Switzerland |
18 years of age; universal |
| Syria |
18 years of age; universal |
| Taiwan |
20 years of age; universal |
| Tajikistan |
18 years of age; universal |
| Tanzania |
18 years of age; universal |
| Thailand |
18 years of age; universal and compulsory |
| Timor-Leste |
17 years of age; universal |
| Togo |
NA years of age; universal (adult) |
| Tokelau |
21 years of age; universal |
| Tonga |
21 years of age; universal |
| Trinidad and Tobago |
18 years of age; universal |
| Tunisia |
20 years of age; universal except for active duty military |
| Turkey |
18 years of age; universal |
| Turkmenistan |
18 years of age; universal |
| Turks and Caicos Islands |
18 years of age; universal |
| Tuvalu |
18 years of age; universal |
| Uganda |
18 years of age; universal |
| Ukraine |
18 years of age; universal |
| 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; island residents are US citizens but do not vote in US presidential elections |
| Wallis and Futuna |
18 years of age; universal |
| Western Sahara |
none; a UN-sponsored voter identification campaign not yet completed |
| Yemen |
18 years of age; universal |
| Zambia |
18 years of age; universal |
| Zimbabwe |
18 years of age; universal |