Joseph Harmatz (Hebrew: ???? ????; 23 January 1925–22 September 2016) was a Lithuanian-born Jew who fought as a partisan fighter during World War II.
After the war, he joined Nakam and plotted acts of revenge that were aimed at killing Nazis to avenge Jewish deaths during the Holocaust.
After emigrating to Israel, he headed World ORT, a Jewish non-profit organization that promotes education and training in communities around the world.