Edmund Kalikst Eugeniusz Charaszkiewicz (Polish pronunciation: [ˈɛdmunt xaraʂˈkjevitʂ]; Poniec, 14 October 1895 – 22 December 1975, London) was a Polish military intelligence officer who specialized in clandestine warfare. Between the World Wars, he helped establish Poland's interbellum borders in conflicts over territory with Poland's neighbours.