The laws regulating citizenship in Poland are the Polish Citizenship Act of April 2009 and the Repatriation Act of 2000. Citizenship is mainly based on the principle of ius sanguinis and is granted automatically to individuals born to at least one Polish parent, irrespective of the place of birth. Polish citizenship may also be granted by adoption, naturalisation or by restoration. The law also gives the Polish President the right to grant citizenship to any individual in any case deemed fit.
Whilst Polish law does not explicitly accept dual citizenship, Polish citizens can hold dual citizenship. Article 3 of the Polish Citizenship Act of 2009 states that a Polish citizen who is a citizen of another country enjoys the same rights and is liable for all duties towards the Republic of Poland, in the same way as any other Polish citizen. In Poland, the Polish authorities will only recognise the Polish citizenship and their second citizenship cannot be exercised while in Poland. Foreigners who are seeking to acquire Polish citizenship are not required to relinquish their other citizenship.