Maria Szyszkowska (born October 7, 1937 in Warsaw) is a Polish academic, writer and former Senator. Szyszkowska was a member of the Alliance of the Democratic Left (SLD) and chaired that Party's Ethics Committee. She is currently a leader of a socialist party Reason of the Polish Left. She is born in old Polish noble family belonging to Clan Ostoja Between 1993 and 1997 she served as a judge on the State Tribunal.