Poznańska is a surname. Notable people with the surname include:
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Sophia Poznańska (1906-1942), Polish-Jewish resistance worker
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Alicja Poznańska (1930-1990, married name Alice Parizeau), Polish-Canadian writer
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Hanna Poznańska, (1918-2011, married name Hanna Segal), British psychoanalyst
See also
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Prowincja Poznańska or Province of Posen, province of Prussia from 1848 to 1919
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AZS Politechnika Poznanska, field hockey team
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