Maria Jadwiga Kwasniewska-Maleszewska, née Kwasniewska (15 August 1913, Lódz, Russian Empire – 17 October 2007, Warsaw) was a Polish athlete who competed mainly in the javelin throw.
She competed for Poland in the 1936 Summer Olympics held in Berlin, Germany, where she won the bronze medal in the Javelin throw.
During World War II she was active in the anti-Nazi underground, and helped Polish and Jewish homeless and starving people.