Karl Gustav von Löwenwolde (17th century-1735) (Polish: Karl Gustaw von Loewenwolde, Russian: Левенвольде, Карл Густав) was a Russian diplomat and military commander. Native of German speaking population of Livonia. He started his career at the court of Peter I of Russia and became one of the most important people at the court of Anna of Russia. He received the rank of general major in 1730. Minister plenipotentiary to Austrian and Prussian courts in 1731; instrumental in the negotiations of the Löwenwolde's Treaty, which broke the possibility of Prussian-French alliance. Minister plenipotentiary in Poland (1733-1734). His last important mission were the negotiations between Russia and Austria in 1734 about alliance against the Ottoman Empire.
