Ernst Kaltenbrunner, Austrian SS officer (b. 1903)
Ernst Kaltenbrunner (4 October 1903 – 16 October 1946) was a high-ranking Austrian SS official during the Nazi era and a major perpetrator of the Holocaust. After the assassination of Reinhard Heydrich in 1942, and a brief period under Heinrich Himmler, Kaltenbrunner was the third Chief of the Reich Security Main Office (RSHA), which included the offices of Gestapo, Kripo and SD, from January 1943 until the end of World War II in Europe.

Kaltenbrunner joined the Nazi Party in 1930 and the SS in 1931, and by 1935 he was considered a leader of the Austrian SS. In 1938, he assisted in the Anschluss and was given command of the SS and police force in Austria. In January 1943, Kaltenbrunner was appointed chief of the RSHA, succeeding Reinhard Heydrich, who was assassinated in May 1942.

A committed anti-Semite and fanatical Hitler loyalist, Kaltenbrunner oversaw a period in which the genocide of Jews intensified. He was the highest-ranking member of the SS to face trial (Himmler having committed suicide in May 1945) at the first Nuremberg trials, where he was found guilty of war crimes and crimes against humanity. Kaltenbrunner was sentenced to death and executed by hanging in October 1946.