Krzyżanowski (feminine Krzyżanowska) is a Polish surname. Notable persons with that name include:
Adam Krzyżanowski, Polish economist, former director of the Polish Academy of LearningAdrian Krzyżanowski (1788–1852), Polish mathematicianAleksander Krzyżanowski (1895–1951), Polish military officerHalina Krzyżanowska (1860–1937), Polish composerKonrad Krzyżanowski (1872–1922), Polish painterRudolf Krzyzanowski (1859–1911), Austrian composer, pupil of Anton BrucknerTadeusz Krzyżanowski (1920–1987), Polish athleteWłodzimierz Krzyżanowski (1824–1887), Polish engineer and military leaderIrena Sendler, née Krzyżanowska