Citizenship by Descent

Estonia's policy of requiring naturalisation of post-war immigrants was in part influenced by Russia's citizenship law and the desire to prevent dual citizenship, and upon the established legal principle that persons who settle under the rule of an occupying power gain no automatic right to nationality.

Dual nationality is not legal in Estonia unless a child has a second citizenship by birth. They must renounce one of their citizenships before they are 21 years old. Estonia citizens who get their citizenship from birth cannot have their nationality removed.

You can apply for Estonian citizenship, if: you have a long-term residence permit or the right of permanent residence. you have lived in Estonia, prior submitting an application, for at least eight years on the ground of a residence permit or by right of residence, of which at least five years on a permanent basis.