Roughly 33 countries offer birthright citizenship in its unconditional form, granting nationality to almost anyone born on their soil regardless of the parents’ status. Nearly all of them sit in the Western Hemisphere. A much larger group of countries offers a conditional version, tying citizenship at birth to a parent’s legal status or length of residence. The full picture is narrower than most people assume.
Jus Soli and Jus Sanguinis
Two Latin phrases drive most citizenship laws. Jus soli (“right of the soil”) means citizenship follows the place of birth. Jus sanguinis (“right of blood”) means citizenship follows the parents, regardless of where the child is born. Most countries lean on one and blend in some of the other.
The practical difference is large. A child born in the United States to parents on tourist visas is a U.S. citizen at birth. A child born in Japan to those same parents is not, because Japan uses jus sanguinis exclusively.
Countries With Unconditional Birthright Citizenship
The countries below grant citizenship automatically to almost anyone born on their territory, with a narrow exception for children of accredited foreign diplomats. The list is heavily concentrated in the Americas.
North America
The United States and Canada are the two largest economies with unconditional birthright citizenship. The Fourteenth Amendment provides that “all persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States.”1Constitution Annotated. Citizenship Clause Doctrine Canada grants citizenship to anyone born on Canadian soil, with a narrow exception for children of foreign diplomats.2Government of Canada. Check if You May Be a Citizen Mexico’s constitution extends citizenship to anyone “born in the territory of the Republic, regardless of the nationality of their parents.”3National Constitution Center. What Do Other Countries Constitutions Say About Birthright Citizenship
Central America and the Caribbean
Nearly every country in the region uses the same approach. In Central America, the list covers Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and Panama. In the Caribbean, it covers Antigua and Barbuda, Barbados, Cuba, Dominica, Grenada, Guyana, Jamaica, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, and Trinidad and Tobago.
South America
South America has the highest concentration of unconditional birthright citizenship. Argentina grants citizenship to anyone born in the republic, excluding only children of foreign diplomats.4United Nations. Argentina Code – Act No 346 Concerning Argentine Citizenship Brazil grants nationality to anyone born in its territory unless both parents are in the service of a foreign government.3National Constitution Center. What Do Other Countries Constitutions Say About Birthright Citizenship Bolivia, Ecuador, Peru, Uruguay, and Venezuela follow similar rules. Chile and Colombia technically have birthright citizenship but require at least one parent to be a legal resident, which places them closer to the conditional model.
Outside the Americas
Unconditional birthright citizenship is rare outside the Western Hemisphere. Lesotho and The Gambia in Africa, and Tuvalu in the Pacific, are among the few that maintain it. No country in Europe or East Asia grants unconditional citizenship simply for being born on its territory.
The Diplomatic Exception
Nearly every country with birthright citizenship carves out an exception for children of accredited foreign diplomats. In the United States, this comes from the Fourteenth Amendment’s “subject to the jurisdiction thereof” language. Diplomats holding full immunity are not considered subject to U.S. jurisdiction, so their children born on American soil do not automatically receive citizenship.5eCFR. Creation of Record of Lawful Permanent Resident Status for Person Born Under Diplomatic Status in the United States
The exception is narrower than people assume. It covers only those on the State Department’s Diplomatic List, meaning ambassadors, ministers, and attachés with full diplomatic immunity. Children born to consular officials or embassy employees who lack full diplomatic status are still U.S. citizens at birth.5eCFR. Creation of Record of Lawful Permanent Resident Status for Person Born Under Diplomatic Status in the United States Argentina, Brazil, Canada, and most other jus soli countries apply a similar carve-out.
Countries With Conditional Birthright Citizenship
A larger group of countries grants citizenship at birth only when certain conditions are met, usually tied to a parent’s legal status or length of residence. Many of these countries once had unconditional rules and tightened them over the past several decades.
United Kingdom
Before 1983, anyone born in the UK was automatically a British citizen. The British Nationality Act 1981 ended that rule. Since January 1, 1983, a child born in the UK becomes a British citizen only if at least one parent is a British citizen or is “settled” in the United Kingdom, meaning they hold permanent residence or equivalent status. A child who doesn’t qualify at birth still has paths in: if a parent later becomes a British citizen or gains settled status while the child is still a minor, the child can register. Anyone born in the UK who lives there for the first ten years of life, missing no more than 90 days per year, can also register regardless of their parents’ status.6GOV.UK. British Nationality Act 1981 – Section 1
France
France uses a layered system. A child born in France to foreign parents does not receive French citizenship at birth unless at least one parent was also born in France, a rule known as “double jus soli.” Otherwise, the child acquires French citizenship automatically at 18 if they have lived in France for at least five years since age 11.7Service Public. How to Obtain French Nationality Parents can file a claim on the child’s behalf starting at age 13 if the child has lived in France since age 8.
Germany
Germany operated on a purely jus sanguinis basis for over a century. A 2000 reform introduced birthright citizenship for the first time, allowing a child of foreign parents to acquire German citizenship at birth if one parent has been legally resident in Germany with a permanent right of residence.8Federal Ministry of the Interior and Community. Nationality Act – Section 4 The required duration of parental residence was originally eight years and was reduced to five when a new nationality law took effect on June 27, 2024.9Federal Foreign Office. Law on Nationality
Ireland
Ireland’s shift is one of the most dramatic. Until 2005, it was the last EU country with unconditional birthright citizenship. A 2004 referendum passed the 27th Amendment to the Irish Constitution, ending automatic citizenship for children born to non-Irish parents effective January 1, 2005. Now a child born in Ireland qualifies only if at least one parent is an Irish or British citizen, holds permanent residence, or has been legally resident on the island for three of the four years before the birth. Time on student visas or while awaiting asylum decisions does not count.10Citizens Information. Entitlement to Irish Citizenship
Australia
Australia changed its rule in 1986. Anyone born in Australia before August 20, 1986, is automatically a citizen. After that date, a child born in Australia is a citizen only if at least one parent is an Australian citizen or permanent resident at the time of birth.11Social Security Guide. SpB for Australian Citizen Children and Australian Permanent Resident Children in the Custody of a Non-Permanent Resident A safety net exists: a child born in Australia to non-citizen, non-resident parents who lives in the country for the first ten years of life becomes an Australian citizen automatically on their tenth birthday, provided Australia has been their ordinary home throughout that period.12AustLII Community. Citizenship – Citizenship by Birth
New Zealand
New Zealand followed two decades later. Anyone born in New Zealand before January 1, 2006, is a citizen by birth. Since that date, birth on New Zealand soil confers citizenship only if at least one parent is a New Zealand citizen or holds a visa allowing indefinite residence.13New Zealand Government. Types of Citizenship – Birth, Descent and Grant
India
India illustrates how far a country can tighten its rules over time. From 1950 through June 30, 1987, anyone born in India was automatically a citizen. From July 1, 1987 through 2004, at least one parent had to be an Indian citizen. Since December 3, 2004, either both parents must be Indian citizens, or one must be a citizen while the other is not an “illegal migrant” as defined under Indian law.14Ministry of Home Affairs, Government of India. Citizenship Act 1955
Thailand
Thailand restricts birthright citizenship based on the parents’ immigration status. A child born in Thailand to foreign parents who entered the country illegally, who hold only temporary residence permits, or who were given special leniency for temporary stay does not receive Thai citizenship at birth.15Thailand Law Library. Nationality Act BE 2508 – Acquisition of Thai Nationality
The Trend Is Toward Restriction
The pattern across the last half-century runs in one direction. The UK changed in 1983, Australia in 1986, India in phases from 1987 to 2004, France in 1993, Ireland in 2005, and New Zealand in 2006. Each moved from an unconditional rule to one requiring some parental tie to the country. Countries rarely expand birthright citizenship; they narrow it.
The Dominican Republic’s case shows how far a reversal can go. Through legal changes beginning with a 2004 immigration law and culminating in a 2013 Constitutional Court ruling, the country retroactively reinterpreted its rules. The court held that children born to undocumented parents had never been entitled to Dominican nationality, going back to 1929. The decision stripped citizenship from tens of thousands of people, many of them of Haitian descent, and drew widespread international condemnation.16Organization of American States. Denationalization and Statelessness in the Dominican Republic
What Comes With Birthright Citizenship
Being born in a jus soli country while your parents are citizens of another country often means dual nationality from birth. That has consequences that catch people by surprise.
Someone born in the United States to foreign parents who returned home shortly after the birth may hold U.S. citizenship without knowing it. The United States is one of only two countries (the other being Eritrea) that taxes citizens on worldwide income regardless of where they live. That means annual U.S. tax returns, reporting of foreign bank accounts exceeding $10,000 in aggregate value, and potential penalties for years of unknown noncompliance. Male dual nationals must also register with the Selective Service System within 30 days of their 18th birthday, even if they live abroad.17Selective Service System. Who Needs to Register
Dual nationality also limits consular protection. The U.S. State Department says its ability to help a dual national may be limited when the person is in their other country of citizenship.18U.S. Department of State. 7 FAM 080 Dual Nationality A country that considers a dual national its own citizen can refuse to recognize another country’s right to provide consular services at all.
Why Birthright Citizenship Matters
The most consequential function of birthright citizenship is preventing statelessness. UNHCR counted approximately 4.4 million stateless people worldwide as of mid-2025, and the actual number is almost certainly higher because many stateless people are never counted.19UNHCR. Stateless People A person with no nationality generally cannot legally work, travel, access healthcare, or enroll children in school.
Countries relying entirely on jus sanguinis can produce stateless children when parents are themselves stateless, when laws strip citizenship from women who marry foreigners, or when registration fails. Jus soli acts as a backstop: no matter what happens with the parents’ status, a child born on the territory has a nationality. Several countries without unconditional birthright citizenship still include limited jus soli provisions specifically to prevent a child born on their soil from becoming stateless.