Polish Citizenship Act of 1920
Ustawa z dnia 20 stycznia 1920 r. o obywatelstwie Państwa Polskiego
The first Polish citizenship law, enacted after Poland regained independence in 1918. Established the original framework for who was a Polish citizen. Crucial for cases involving ancestors from the interwar period.
What this law actually does
No dual citizenship allowed under this law
Acquisition of foreign citizenship caused loss of Polish citizenship
Military service in a foreign army could cause loss of citizenship
Poles who left before independence in 1918 could not automatically confirm citizenship
This law is one piece of the Poland eligibility picture. See the full overview for how it interacts with disqualifiers, documents, and timelines.
Poland eligibility overviewGet alerts when this law changes
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