Poznańska

Poznańska is a surname. Notable people with the surname include:
 * Sophia Poznańska (1906-1942), Polish-Jewish resistance worker
 * Alicja Poznańska (1930-1990, married name Alice Parizeau), Polish-Canadian writer
 * Hanna Poznańska, (1918-2011, married name Hanna Segal), British psychoanalyst