Helene Overlach (19 July 1894 - 7 August 1983) was a German Communist party official and politician. Unusually for a woman at that time, between 1928 and 1933 she served as a member of the German parliament ("Reichstag") in Berlin, representing Electoral District 22 (Düsseldorf East). During the Hitler years her relatively high political profile before 1933 earned her the close attention of the security services. She survived, despite spending much of the time during those twelve years in prisons and concentration camps: her health was badly affected.