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Our goal is to provide academics, governments, international organisations and NGOs with information for research and evidence-based evaluation of public policies.

We do not offer information or counselling to individuals interested in acquiring the citizenship of a particular country and we do not encourage experts in our network to answer such requests.

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The EUDO CITZENSHIP Web site should be the first place policymakers, researchers, and journalists with questions about citizenship and nationality laws visit.

Demetrios G. Papademetriou, President, Migration Policy Institute

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The EUDO CITIZENSHIP website is unique in combining extensive and up to date data on citizenship in the EU, intelligent analysis of all legal and political aspects of citizenship and breaking news on the subject. At last, the issue of trans-European citizenship has truly come alive for the benefit of us all.

Kalypso Nicolaïdis, University of Oxford, member of the EU reflection group on the Future of Europe

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Modes of acquisition

Modes of acquisition database

The database on modes of acquisition provides information on how citizenship is acquired in all countries covered by EUDO CITIZENSHIP.

The database allows two types of searches that cannot be combined:

  • Country: search by country and view all regulations in one country.
  • Mode: search by mode and view regulations across countries.

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Modes of acquisition of citizenship: overview

ID

Target group

ID

Target group
A01Persons born to citizens of C1A14Children of foreign citizens acquiring citizenship of C1
A02Persons born in C1 who acquire citizenship of C1 at birth irrespective of the citizenship of their parentsA15Other relatives of foreign citizens who acquire citizenship of C1
A03aChildren found in C1 of unknown parentageA16Former citizens of C1
A03bChildren born in C1 who would otherwise be statelessA17Citizens with restricted citizenship rights
A04Persons born to citizens of C1 whose descent is established by recognition or judicial establishment of maternity/paternityA18Persons with citizenship of C2
A05Persons born in C1 who acquire citizenship of C1 after birth irrespective of their parents' citizenshipA19Persons with cultural affinity to C1
A06Persons with a certain period of residence in C1 with no special statusA20Persons who acted as citizens of C1 in good faith and/or were presumed to be citizens of C1 for some time
A07Persons with a certain period of residence or schooling as minors in C1A21Persons with other special connections to C1
A08Spouses or registered partners of citizens of C1A22Recognized refugees
A09Children of persons who are now citizens of C1, but were not at the time of the child`s birthA23Stateless persons or persons with unclear citizenship
A10Children adopted by citizens of C1A24Persons with special achievements for C1
A11Other relatives of citizens of C1A25Persons in public service of C1
A12Spouses, children or granschildren of former or deceased citizens of C1A26Persons with special financial assets or persons who invest money in C1
A13Spouses or registered partners of foreign citizens who acquire citizenship of C1A27Other