Konstantin Alexander Karl Wilhelm Christoph Graf von Benckendorff (, Alexander Khristoforovich Benkendorf, ) was a Baltic German Cavalry General and statesman, Adjutant General of Tsar Alexander I, a commander of "partisan" ("Kossak irregular") units during the War of 1812–13. However, he is most frequently remembered for his later role, under Tsar Nicholas I, as the founding head of the Gendarmes and the Secret Police in Imperial Russia.