This list is based on the best current information available. Some countries do not allow a dual citizenship at all. If you are concerned about losing your present citizenship when you naturalize to a U.S. citizen, speak to a representative of your government before filing for naturalization.
Dual Citizenship Generally Allowed After U.S. Naturalization
- Albania
- Algeria
- American Samoa
- Angola
- Antigua & Barbuda
- Argentina
- Armenia
- Australia
- Barbados
- Belgium
- Belize
- Benin
- Bolivia
- Bosnia & Herzegovina
- Brazil
- Bulgaria
- Burkina Faso
- Burundi
- Cambodia
- Canada
- Cape Verde
- Central African Republic
- Chile
- Colombia
- Comoros
- Republic of Congo
- Costa Rica
- Ivory Coast
- Croatia
- Cyprus
- Czech Republic
- Denmark
- Djibouti
- Dominica
- Dominican Republic
- East Timor
- Ecuador
- Egypt
- El Salvador
- Equatorial Guinea
- Fiji
- Finland
- France
- The Gambia
- Germany
- Ghana
- Greece
- Grenada
- Guatemala
- Guinea-Bissau
- Haiti
- Honduras
- Hungary
- Iceland
- Iraq
- Ireland
- Israel
- Italy
- Jamaica
- Jordan
- Kenya
- South Korea
- Kosovo
- Kyrgyzstan
- Latvia
- Lebanon
- Lithuania
- Luxembourg
- Macau
- Macedonia
- Mali
- Malta
- Mauritius
- Mexico
- Moldova
- Morocco
- Namibia
- Nauru
- New Zealand
- Nicaragua
- Niger
- Nigeria
- Pakistan
- Panama
- Papua New Guinea
- Paraguay
- Peru
- Poland
- Portugal
- Romania
- Russian Federation
- Saint Kitts & Nevis
- Saint Lucia
- Saint Vincent and the Grenadines
- Samoa
- Scotland
- Serbia
- Seychelles
- Sierra Leone
- Slovenia
- Somalia
- South Africa
- South Sudan
- Spain
- Sri Lanka
- Sudan
- Sweden
- Switzerland
- Syria
- Taiwan
- Tajikistan
- Thailand
- Tibet
- Tonga
- Trinidad & Tobago
- Tunisia
- Turkey
- Uganda
- United Kingdom
- Uruguay
- Vatican City
- Venezuela
- Vietnam
- British Virgin Islands
- Yemen
- Zambia
- Zimbabwe
Dual Citizenship Generally Not Allowed After U.S. Naturalization
- Afghanistan
- Andorra
- Austria
- Azerbaijan
- Bahamas
- Bahrain
- Bangladesh
- Belarus
- Bhutan
- Botswana
- Brunei Darussalam
- Cameroon
- China
- Democratic Republic of the Congo
- Cuba
- Eritrea
- Estonia
- Ethiopia
- Georgia
- Guyana
- Hong Kong
- India
- Indonesia
- Iran
- Japan
- Kazakhstan
- Kiribati
- North Korea
- Kuwait
- Laos
- Lesotho
- Liberia
- Lybia
- Liechtenstein
- Madagascar
- Malawi
- Malaysia
- Maldives
- Marshall Islands
- Mauritania
- Micronesia
- Monaco
- Mongolia
- Montenegro
- Mozambique
- Myanmar (Burma)
- Nepal
- Netherlands
- Norway
- Oman
- Palau
- Philippines
- Qatar
- Rwanda
- San Marino
- Sao Tome and Principe
- Saudi Arabia
- Singapore
- Slovakia
- Solomon Islands
- Suriname
- Swaziland
- Tanzania
- Togo
- Turkmenistan
- Ukraine
- United Arab Emirates
- Uzbekistan
- Vanuatu
Many countries listed above have exceptions and special cases. You would need to research each country for your own specific case.