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Afghanistancitizenship by birth: no
citizenship by descent only: at least one parent must have been born in - and continuously lived in - Afghanistan
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Albaniacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Albania
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Algeriacitizenship by birth: no
citizenship by descent only: the mother must be a citizen of Algeria
dual citizenship recognized: no
residency requirement for naturalization: 7 years
American Samoasee United States
Andorracitizenship by birth: no
citizenship by descent only: the mother must be an Andorran citizen or the father must have been born in Andorra and both parents maintain permanent residence in Andorra
dual citizenship recognized: no
residency requirement for naturalization: 25 years
Angolacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Angola
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Anguillasee United Kingdom
Antigua and Barbudacitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 7 years
Argentinacitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 2 years
Armeniacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Armenia
dual citizenship recognized: yes
residency requirement for naturalization: 3 years
Arubasee the Netherlands
Ashmore and Cartier Islandssee Australia
Australiacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen or permanent resident of Australia
dual citizenship recognized: yes
residency requirement for naturalization: 4 years
Austriacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Austria
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Azerbaijancitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Bahamas, Thecitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of The Bahamas
dual citizenship recognized: no
residency requirement for naturalization: 6-9 years
Bahraincitizenship by birth: no
citizenship by descent only: the father must be a citizen of Bahrain
dual citizenship recognized: no
residency requirement for naturalization: 25 years; 15 years for Arab nationals
Bangladeshcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Bangladesh
dual citizenship recognized: yes, but limited to select countries
residency requirement for naturalization: 5 years
Barbadoscitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Belaruscitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Belarus
dual citizenship recognized: no
residency requirement for naturalization: 7 years
Belgiumcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Belgium
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Belizecitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Benincitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Benin
dual citizenship recognized: yes
residency requirement for naturalization: 10 years
Bermudacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of the UK
dual citizenship recognized: yes
residency requirement for naturalization: 10 years
Bhutancitizenship by birth: no
citizenship by descent only: the father must be a citizen of Bhutan
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Boliviacitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 3 years
Bosnia and Herzegovinacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Bosnia and Herzegovina
dual citizenship recognized: yes, provided there is a bilateral agreement with the other state
residency requirement for naturalization: 8 years
Botswanacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Botswana
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Brazilcitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 4 years
British Virgin Islandssee United Kingdom
Bruneicitizenship by birth: no
citizenship by descent only: the father must be a citizen of Brunei
dual citizenship recognized: no
residency requirement for naturalization: 12 years
Bulgariacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Bulgaria
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Burkina Fasocitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Burkina Faso
dual citizenship recognized: yes
residency requirement for naturalization: 10 years
Burmacitizenship by birth: no
citizenship by descent only: both parents must be citizens of Burma
dual citizenship recognized: no
residency requirement for naturalization: none
note: an applicant for naturalization must be the child or spouse of a citizen
Burundicitizenship by birth: no
citizenship by descent only: the father must be a citizen of Burundi
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Cambodiacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Cambodia
dual citizenship recognized: yes
residency requirement for naturalization: 7 years
Camerooncitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Cameroon
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Canadacitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 3 years
Cape Verdecitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Cabo Verde
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Cayman Islandssee United Kingdom
Central African Republiccitizenship by birth: no
citizenship by descent only: least one parent must be a citizen of the Central African Republic
dual citizenship recognized: yes
residency requirement for naturalization: 35 years
Chadcitizenship by birth: no
citizenship by descent only: both parents must be citizens of Chad
dual citizenship recognized: Chadian law does not address dual citizenship
residency requirement for naturalization: 15 years
Chilecitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Chinacitizenship by birth: no
citizenship by descent only: least one parent must be a citizen of China
dual citizenship recognized: no
residency requirement for naturalization: while naturalization is theoretically possible, in practical terms it is extremely difficult; residency is required but not specified
Christmas Islandsee Australia
Cocos (Keeling) Islandssee Australia
Colombiacitizenship by birth: no
citizenship by descent only: least one parent must be a citizen or permanent resident of Colombia
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Comoroscitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of the Comoros
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Congo, Democratic Republic of thecitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of the Democratic Republic of the Congo
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Congo, Republic of thecitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of the Republic of the Congo
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Coral Sea Islandssee Australia
Costa Ricacitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 7 years
Cote d'Ivoirecitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Cote d'Ivoire
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Croatiacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Croatia
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Cubacitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: no
residency requirement for naturalization: unknown
Curacaosee the Netherlands
Cypruscitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Cyprus
dual citizenship recognized: yes
residency requirement for naturalization: 7 years
Czech Republiccitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Czechia
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Denmarkcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Denmark
dual citizenship recognized: yes
residency requirement for naturalization: 7 years
Djibouticitizenship by birth: no
citizenship by descent only: the mother must be a citizen of Djibouti
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Dominicacitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Dominican Republiccitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of the Dominican Republic
dual citizenship recognized: yes
residency requirement for naturalization: 2 years
East Timorcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Timor-Leste
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Ecuadorcitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: no
residency requirement for naturalization: 3 years
Egyptcitizenship by birth: no
citizenship by descent only: if the father was born in Egypt
dual citizenship recognized: only with prior permission from the government
residency requirement for naturalization: 10 years
El Salvadorcitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Equatorial Guineacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Equatorial Guinea
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Eritreacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Eritrea
dual citizenship recognized: no
residency requirement for naturalization: 20 years
Estoniacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Estonia
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Ethiopiacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Ethiopia
dual citizenship recognized: no
residency requirement for naturalization: 4 years
Falkland Islands (Islas Malvinas)see United Kingdom
Faroe Islandssee Denmark
Fijicitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Fiji
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Finlandcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Finland
dual citizenship recognized: yes
residency requirement for naturalization: 6 years
Francecitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of France
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
French Polynesiasee France
French Southern and Antarctic Landssee France
Gaboncitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Gabon
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Gambia, Thecitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Georgiacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Georgia
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Germanycitizenship by birth: no
citizenship by descent only: at least one parent must be a German citizen or a resident alien who has lived in Germany at least 8 years
dual citizenship recognized: yes, but requires prior permission from government
residency requirement for naturalization: 8 years
Ghanacitizenship by birth: no
citizenship by descent only: at least one parent or grandparent must be a citizen of Ghana
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Gibraltarsee United Kingdom
Greececitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Greece
dual citizenship recognized: yes
residency requirement for naturalization: 10 years
Greenlandsee Denmark
Grenadacitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 7 years for persons from a non-Caribbean state and 4 years for a person from a Caribbean state
Guamsee United States
Guatemalacitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 5 years with no absences of six consecutive months or longer or absences totaling more than a year
Guernseysee United Kingdom
Guineacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Guinea
dual citizenship recognized: no
residency requirement for naturalization: na
Guinea-Bissaucitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Guyanacitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: no
residency requirement for naturalization: na
Haiticitizenship by birth: no
citizenship by descent only: at least one parent must be a native-born citizen of Haiti
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Holy See (Vatican City)citizenship by birth: no
citizenship by descent: no
dual citizenship recognized: no
residency requirement for naturalization: not applicable
note: in the Holy See, citizenship is acquired by law, ex iure, or by adminstrative decision; in the first instance, citizenship is a function of holding office within the Holy See as in the case of cardinals resident in Vatican City or diplomats of the Holy See; in the second instance, citizenship may be requested in a limited set of circumstances for those who reside within Vatican City under papal authorization, as a function of their office or service, or as the spouses and children of current citizens; citizenship is lost once an individual no longer permanently resides in Vatican City, normally reverting to the citizenship previously held
Hondurascitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 1 to 3 years
Hong Kongsee China
Hungarycitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Hungary
dual citizenship recognized: yes
residency requirement for naturalization: 8 years
Icelandcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Iceland
dual citizenship recognized: yes
residency requirement for naturalization: 3 to 7 years
Indiacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of India
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Indonesiacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Indonesia
dual citizenship recognized: no
residency requirement for naturalization: 5 continuous years
Irancitizenship by birth: no
citizenship by descent only: the father must be a citizen of Iran
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Iraqcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Iraq
dual citizenship recognized: yes
residency requirement for naturalization: 10 years
Irelandcitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 4 of the previous 8 years
Isle of Mansee United Kingdom
Israelcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Israel
dual citizenship recognized: yes, but naturalized citizens are not allowed to maintain dual citizenship
residency requirement for naturalization: 3 out of the 5 years preceding the application for naturalization
note: Israeli law (Law of Return, 5 July 1950) provides for the granting of citizenship to any Jew - defined as a person being born to a Jewish mother or having converted to Judaism while renouncing any other religion - who immigrates to and expresses a desire to settle in Israel on the basis of the Right of aliyah; the 1970 amendment of this act extended the right to family members including the spouse of a Jew, any child or grandchild, and the spouses of children and grandchildren
Italycitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Italy
dual citizenship recognized: yes
residency requirement for naturalization: 4 years for EU nationals, 5 years for refugees and specified exceptions, 10 years for all others
Jamaicacitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 4 out of the previous 5 years
Japancitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Japan
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Jerseysee United Kingdom
Jordancitizenship by birth: no
citizenship by descent only: the father must be a citizen of Jordan
dual citizenship recognized: yes
residency requirement for naturalization: 15 years
Kazakhstancitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Kazakhstan
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Kenyacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Kenya
dual citizenship recognized: yes
residency requirement for naturalization: 4 out of the previous 7 years
Kiribaticitizenship by birth: no
citizenship by descent only: at least one parent must be a native-born citizen of Kiribati
dual citizenship recognized: no
residency requirement for naturalization: 7 years
Korea, Northcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of North Korea
dual citizenship recognized: no
residency requirement for naturalization: unknown
Korea, Southcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of South Korea
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Kosovocitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Kosovo
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Kuwaitcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Kuwait
dual citizenship recognized: no
residency requirement for naturalization: not specified
Kyrgyzstancitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Kyrgyzstan
dual citizenship recognized: yes, but only if a mutual treaty on dual citizenship is in force
residency requirement for naturalization: 5 years
Laoscitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Laos
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Latviacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Latvia
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Lebanoncitizenship by birth: no
citizenship by descent only: the father must be a citizen of Lebanon
dual citizenship recognized: yes
residency requirement for naturalization: unknown
Lesothocitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Liberiacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Liberia
dual citizenship recognized: no
residency requirement for naturalization: 2 years
Libyacitizenship by birth: no
citizenship by descent only: at least one parent or grandparent must be a citizen of Libya
dual citizenship recognized: no
residency requirement for naturalization: varies from 3 to 5 years
Liechtensteincitizenship by birth: no
citizenship by descent only: the father must be a citizen of Liechtenstein; in the case of a child born out of wedlock, the mother must be a citizen
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Lithuaniacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Lithuania
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Luxembourgcitizenship by birth: limited to situations where the parents are either unknown, stateless, or when the nationality law of the parents' state of origin does not permit acquisition of citizenship by descent when the birth occurs outside of national territory
citizenship by descent: at least one parent must be a citizen of Luxembourg
dual citizenship recognized: yes
residency requirement for naturalization: 7 years
Macausee China
Macedoniacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Macedonia
dual citizenship recognized: no
residency requirement for naturalization: 8 years
Madagascarcitizenship by birth: no
citizenship by descent only: the father must be a citizen of Madagascar; in the case of a child born out of wedlock, the mother must be a citizen
dual citizenship recognized: no
residency requirement for naturalization: unknown
Malawicitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Malawi
dual citizenship recognized: no
residency requirement for naturalization: 7 years
Malaysiacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Malaysia
dual citizenship recognized: no
residency requirement for naturalization: 10 out 12 years preceding application
Maldivescitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of the Maldives
dual citizenship recognized: yes
residency requirement for naturalization: unknown
Malicitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Mali
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Maltacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Malta
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Marshall Islandscitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of the Marshall Islands
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Mauritaniacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Mauritania
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Mauritiuscitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 5 out of the previous 7 years including the last 12 months
Mexicocitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: not specified
residency requirement for naturalization: 5 years
Micronesia, Federated States ofcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of FSM
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Midway Islandssee United States
Moldovacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Moldova
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Monacocitizenship by birth: no
citizenship by descent only: the father must be a citizen of Monaco; in the case of a child born out of wedlock, the mother must be a citizen and father unknown
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Mongoliacitizenship by birth: no
citizenship by descent only: both parents must be citizens of Mongolia; one parent if born within Mongolia
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Montenegrocitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Montenegro
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Montserratsee United Kingdom
Moroccocitizenship by birth: no
citizenship by descent only: the father must be a citizen of Morocco; if the father is unknown or stateless, the mother must be a citizen
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Mozambiquecitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Mozambique
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Namibiacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Namibia
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Nepalcitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: no
residency requirement for naturalization: 15 years
Netherlandscitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of the Netherlands
dual citizenship recognized: no
residency requirement for naturalization: 5 years
New Caledoniasee France
New Zealandcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of New Zealand
dual citizenship recognized: yes
residency requirement for naturalization: 3 years
Nicaraguacitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: no, except in cases where bilateral agreements exist
residency requirement for naturalization: 4 years
Nigercitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Niger
dual citizenship recognized: yes
residency requirement for naturalization: unknown
Nigeriacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Nigeria
dual citizenship recognized: yes
residency requirement for naturalization: 15 years
Norfolk Islandsee Australia
Northern Mariana Islandssee United States
Norwaycitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Norway
dual citizenship recognized: no
residency requirement for naturalization: 7 years
Omancitizenship by birth: no
citizenship by descent only: the father must be a citizen of Oman
dual citizenship recognized: no
residency requirement for naturalization: unknown
Pakistancitizenship by birth: yes
citizenship by descent: at least one parent must be a citizen of Pakistan
dual citizenship recognized: yes, but limited to select countries
residency requirement for naturalization: 4 out of the previous 7 years and including the 12 months preceding application
Palaucitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Palau
dual citizenship recognized: no
residency requirement for naturalization: note - no procedure for naturalization
Panamacitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Papua New Guineacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Papua New Guinea
dual citizenship recognized: no
residency requirement for naturalization: 8 years
Paraguaycitizenship by birth: yes
citizenship by descent: at least one parent must be a native-born citizen of Paraguay
dual citizenship recognized: yes
residency requirement for naturalization: 3 years
Perucitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 2 years
Philippinescitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of the Philippines
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Pitcairn Islandssee United Kingdom
Polandcitizenship by birth: no
citizenship by descent only: both parents must be citizens of Poland
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Portugalcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Portugal
dual citizenship recognized: yes
residency requirement for naturalization: 10 years; 6 years if from a Portuguese-speaking country
Puerto Ricosee United States
Qatarcitizenship by birth: no
citizenship by descent only: the father must be a citizen of Qatar
dual citizenship recognized: no
residency requirement for naturalization: 20 years; 15 years if an Arab national
Romaniacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Romania
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Russiacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Russia
dual citizenship recognized: yes
residency requirement for naturalization: 3-5 years
Rwandacitizenship by birth: no
citizenship by descent only: the father must be a citizen of Rwanda; if the father is stateless or unknown, the mother must be a citizen
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Saint Barthelemysee France
Saint Helenasee United Kingdom
Saint Kitts and Neviscitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 14 years
Saint Luciacitizenship by birth: yes
citizenship by descent: at least one parent must be a citizen of Saint Lucia
dual citizenship recognized: yes
residency requirement for naturalization: 8 years
Saint Martinsee France
Saint Pierre and Miquelonsee France
Saint Vincent and the Grenadinescitizenship by birth: yes
citizenship by descent: at least one parent must be a citizen of Saint Vincent and the Grenadines
dual citizenship recognized: yes
residency requirement for naturalization: 7 years
Samoacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Samoa
dual citizenship recognized: no
residency requirement for naturalization: 5 years
San Marinocitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of San Marino
dual citizenship recognized: no
residency requirement for naturalization: 30 years
Sao Tome and Principecitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Sao Tome and Principe
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Saudi Arabiacitizenship by birth: no
citizenship by descent only: the father must be a citizen of Saudi Arabia; a child born out of wedlock in Saudi Arabia to a Saudi mother and unknown father
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Senegalcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Senegal
dual citizenship recognized: no, but Senegalese citizens do not automatically lose their citizenship if they acquire citizenship in another state
residency requirement for naturalization: 5 years
Serbiacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Serbia
dual citizenship recognized: yes
residency requirement for naturalization: 3 years
Seychellescitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of the Seychelles
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Sierra Leonecitizenship by birth: no
citizenship by descent only: at least one parent or grandparent must be a citizen of Sierra Leone
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Singaporecitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Singapore
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Sint Maartensee the Netherlands
Slovakiacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Slovakia
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Sloveniacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Slovenia; both parents if the child is born outside of Slovenia
dual citizenship recognized: yes, for select cases
residency requirement for naturalization: 10 years, the last 5 of which have been continuous
Solomon Islandscitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of the Solomon Islands
dual citizenship recognized: no
residency requirement for naturalization: 7 years
Somaliacitizenship by birth: no
citizenship by descent only: the father must be a citizen of Somalia
dual citizenship recognized: no
residency requirement for naturalization: 7 years
South Africacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of South Africa
dual citizenship recognized: yes, but requires prior permission of the government
residency requirement for naturalization: 1 year
South Sudancitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of South Sudan
dual citizenship recognized: yes
residency requirement for naturalization: 10 years
Spaincitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Spain
dual citizenship recognized: only with select Latin American countries
residency requirement for naturalization: 10 years for persons with no ties to Spain
Sri Lankacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Sri Lanka
dual citizenship recognized: no, except in cases where the government rules it is to the benefit of Sri Lanka
residency requirement for naturalization: 7 years
Sudancitizenship by birth: no
citizenship by descent only: the father must be a citizen of Sudan
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Surinamecitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Suriname
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Svalbardsee Norway
Swazilandcitizenship by birth: no
citizenship by descent only: both parents must be citizens of Swaziland
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Swedencitizenship by birth: no
citizenship by descent only: the father must be a citizen of Sweden; in the case of a child born out of wedlock, the mother must be a citizen of Sweden and the father unknown
dual citizenship recognized: no, unless the other citizenship was acquired involuntarily
residency requirement for naturalization: 5 years
Switzerlandcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Switzerland
dual citizenship recognized: yes
residency requirement for naturalization: 12 years including at least 3 of the last 5 years prior to application
Syriacitizenship by birth: no
citizenship by descent only: the father must be a citizen of Syria; if the father is unknown or stateless, the mother must be a citizen of Syria
dual citizenship recognized: yes
residency requirement for naturalization: 10 years
Taiwancitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Taiwan
dual citizenship recognized: yes, except that citizens of Taiwan are not recognized as dual citizens of the People's Republic of China
residency requirement for naturalization: 5 years
Tajikistancitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Tajikistan
dual citizenship recognized: no
residency requirement for naturalization: 5 years or 3 years of continuous residence prior to application
Tanzaniacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Tanzania; if a child is born abroad, the father must be a citizen of Tanzania
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Thailandcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Thailand
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Togocitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Togo
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Tokelausee New Zealand
Tongacitizenship by birth: no
citizenship by descent only: the father must be a citizen of Tonga; if a child is born out of wedlock, the mother must be a citizen of Tonga
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Trinidad and Tobagocitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 8 years
Tunisiacitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Tunisia
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
Turkeycitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Turkey
dual citizenship recognized: yes, but requires prior permission from the government
residency requirement for naturalization: 5 years
Turkmenistancitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Turkmenistan
dual citizenship recognized: yes
residency requirement for naturalization: 7 years
Turks and Caicos Islandssee United Kingdom
Tuvalucitizenship by birth: yes
citizenship by descent: yes; for a child born abroad, at least one parent must be a citizen of Tuvalu
dual citizenship recognized: yes
residency requirement for naturalization: na
Ugandacitizenship by birth: no
citizenship by descent only: at least one parent or grandparent must be a native-born citizen of Uganda
dual citizenship recognized: yes
residency requirement for naturalization: an aggregate of 20 years and continuously for the last 2 years prior to applying for citizenship
Ukrainecitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Ukraine
dual citizenship recognized: no
residency requirement for naturalization: 5 years
United Arab Emiratescitizenship by birth: no
citizenship by descent only: the father must be a citizen of the United Arab Emirates; if the father is unknown, the mother must be a citizen
dual citizenship recognized: no
residency requirement for naturalization: 30 years
United Kingdomcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of the United Kingdom
dual citizenship recognized: yes
residency requirement for naturalization: 5 years
United Statescitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: no, but the US government acknowledges such situtations exist; US citizens are not encouraged to seek dual citizenship since it limits protection by the US
residency requirement for naturalization: 5 years
Uruguaycitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: yes
residency requirement for naturalization: 3-5 years
Uzbekistancitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Uzbekistan
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Vanuatucitizenship by birth: no
citizenship by descent only: both parents must be citizens of Vanuatu; in the case of only one parent, it must be the father who is a citizen
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Venezuelacitizenship by birth: yes
citizenship by descent: yes
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Vietnamcitizenship by birth: no
citizenship by descent only: at least one parent must be a citizen of Vietnam
dual citizenship recognized: no
residency requirement for naturalization: 5 years
Virgin Islandssee United States
Wake Islandsee United States
Wallis and Futunasee France
Yemencitizenship by birth: no
citizenship by descent only: the father must be a citizen of Yemen; if the father is unknown, the mother must be a citizen
dual citizenship recognized: no
residency requirement for naturalization: 10 years
Zambiacitizenship by birth: only if at least one parent is a citizen of Zambia
citizenship by descent: yes, if at least one parent was a citizen of Zambia
dual citizenship recognized: yes
residency requirement for naturalization: 5 years for those with an ancestor who was a citizen of Zambia, otherwise 10 years residency is required
Zimbabwecitizenship by birth: no
citizenship by descent only: the father must be a citizen of Zimbabwe; in the case of a child born out of wedlock, the mother must be a citizen
dual citizenship recognized: no
residency requirement for naturalization: 5 years

Source: CIA Factbook