Comparing Citizenship Laws: Loss of Citizenship

EUDO CITIZENSHIP Global Database on Modes of Loss of Citizenship

The EUDO CITIZENSHIP Global Database on Modes of Loss of Citizenship includes information on the different ways in which citizenship can be lost across the world. Citizenship laws often use different terms for similar rules. Comparing legal provisions on acquisition and loss of citizenship requires therefore a standardisation of terms and definitions. The database is organized around a comprehensive typology of modes of loss of citizenship which outlines, in a systematic way, 15 ways in which citizenship can be lost. For each mode of loss of citizenship the typology outlines a standardized 'target person' which allows comparing rules applicable to similar groups across countries. See here for a complete overview of the comparative typology.

The Global Database on Modes of Loss of Citizenship covers information on 42 European states and 35 states in the Americas and the Caribbean. The Database includes information on laws in force in these 77 states on 1 January of a given year. The Database includes information for the period 2013-2016 and will be updated annually. 

The database allows two types of searches (search types cannot be combined):

  • Country: search by country and view all regulations in one country (for all available years or select a specific year).
  • Mode: search by mode and view similar regulations across countries (for all available years or select a specific year).

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The EUDO CITIZENSHIP Global Database on Modes of Loss of Citizenship has been developed by a project team of EUDO CITIZENSHIP consortium members, coordinated by Maarten Vink (Maastricht University) and Olivier Vonk (University of Liège) together with Rainer Baubock (European University Institute), Iseult Honohan (University College Dublin) and Gerard-René de Groot (Maastricht University). The Database relies on invaluable input from country experts who provide information on the interpretation and context of citizenship laws in Europe and the Americas.

The comparative typology of modes of loss of citizenship builds on earlier work by Harald Waldrauch (see more information here) and has been subsequently refined and expanded.

This database is made available freely for non-commercial use by the general public. We ask that users of the database acknowledge its source when using the data in their publications. Please cite as follows:

EUDO CITIZENSHIP (2015). Global Database on Modes of Loss of Citizenship. San Domenico di Fiesole: European University Institute. Available at: http://eudo-citizenship.eu/databases/modes-of-loss  

For questions about this database, please contact Maarten Vink and Olivier Vonk.

The 2015 update of the database on loss of citizenship has been supported the European Commission’s DG Justice, Citizenship and Fundamental Rights in the context of the ILEC project (Involuntary Loss of European Citizenship: Exchanging Knowledge and Identifying Guidelines for Europe), which aims to establish a framework for debate on international norms on involuntary loss of nationality. For more information visit: www.ilecproject.eu