Friedrich von Adelung (February 25, 1768 – January 30, 1843) was a German-Russian linguist, historian and bibliographer. His best known works are in the fields of bibliography of Sanskrit language and the European accounts of the Time of Troubles in Russia.
A nephew of historian Johann Christoph Adelung, Friedrich von Adelung was born in Stettin. He graduated from Leipzig University, traveled across Europe and settled in Saint Petersburg in 1794. After a brief state service in Mitau (1795–1797), Adelung relocated to Saint Petersburg for the rest of his life. He assumed the role of a state supervisor for the German-Russian community, first in German book censorship, later (1801) as the manager of German-language theaters. In 1803 he was appointed as a tutor to Grand Duke Nicholas, heir apparent and the future Tsar, and his brother Michael. A collection of antiques compiled by Adelung and sold in 1804 to Vasiliy Karazin, founder of the Kharkiv University, formed the nucleus of Kharkiv University library. Adelung was an honorary professor of Kharkiv and Derpt universities since 1809. In 1819 Adelung joined the Foreign Ministry service, and in 1825 assumed control of its Institute of Oriental Languages. At that time it was the only college in Europe offering studies in Persian and Turkish languages. He was elected to the American Philosophical Society in 1819. In 1818 he became associated member of the Royal Institute of the Netherlands.