Jan Kwapiński (1885–1964), born Piotr Chałupka was a Polish independence activist, politician and statesman. Member of Combat Organization of the Polish Socialist Party, imprisoned by Russian Empire authorities in Warsaw Citadel. After Poland regained independence following the First World War, member of Polish parliament (Sejm) after being elected in Polish legislative election, 1922 and mayor of Łódź (1939).