Herta Geffke (married name, Herta Kaasch: 19 August 1893 – 29 December 1974) was a German activist and politician (KPD, SED) who resisted Nazism.[1] After 1945 she became a member of the Central Party Control Commission of the SED (Zentrale Parteikontrollkommission / ZPKK) in the Soviet occupation zone (from 1949 the German Democratic Republic), identified as a "true Stalinist" and feared on account of her interrogation methods.[2]