Otto Ohlendorf (German pronunciation: [ˈʔɔto ˈʔoːləndɔɐ̯f]; 4 February 1907 – 8 June 1951) was a German SS functionary and Holocaust perpetrator during the Nazi era. An economist by education, he was head of the Sicherheitsdienst (SD) Inland, responsible for intelligence and security within Germany. In 1941, Ohlendorf was appointed the commander of Einsatzgruppe D, which perpetrated mass murder in Moldova, south Ukraine, the Crimea and, during 1942, the North Caucasus.