Frank Blaichman (born 1922) (also Ephraim Blaichman, occasionally spelled Frank Bleichman, and in Polish Franek or Franciszek Blajchman) was a Polish-Jewish member of an armed organization during World War II. Near the end of the war and immediately afterward he worked for the communist Ministry of Public Security. Afterward he emigrated to the USA. His 2009 memoir has caused a controversy in Poland.