Gideon Hausner (Hebrew: גדעון האוזנר‎, 26 September 1915 – 15 November 1990) was an Israeli jurist and politician. Between 1960 and 1963, he served as Attorney General and was later elected to the Knesset and served in the cabinet.

Hausner is most widely known for heading the team of prosecutors at the war crimes trial of Adolf Eichmann in Jerusalem in 1961. Hausner is generally credited with exposing the Holocaust to the world in bold cross-examinations of Eichmann, but was criticized for showmanship. His judicial skill also set the precedent that the defense "I was only following orders" is not valid if such orders are wholly criminal and illegal. The prosecution succeeded in proving Eichmann's guilt, and Eichmann was found guilty on all charges, including crimes against humanity and crimes against the Jewish people. He was sentenced to death.