Christian August of Holstein-Gottorp (1706-1756) was a German nobleman and the Duke of Holstein-Gottorp. He was a member of the House of Holstein-Gottorp, a branch of the House of Oldenburg, which played a significant role in the politics of Northern Europe during the 18th century. His reign was marked by efforts to modernize his duchy and strengthen its economy. In 1739, Christian August became the Duke of Holstein-Gottorp after the death of his father, Frederick IV. He was also known for his connections to the Russian Empire, particularly through his marriage to Anna Petrovna, the daughter of Peter the Great. His lineage and alliances contributed to the complex political landscape of the time.