HOPKEN, ANDERS JOHAN, COUNT VON (1712-1789), Swedish statesman, was the son of Daniel Niklas Hopken, one of Arvid Horn's most determined opponents and a founder of the Hat party. When in 1738 the Hats came into power the younger Hopken obtained a seat in the secret committee of the diet, and during the Finnish war of 1741-42 was one of the two com missioners appointed to negotiate with Russia. During the diet of 1746-47 Hopken's influence was of the greatest importance. It was chiefly through his efforts that the estates issued a "na tional declaration" protesting against the arrogant attitude of the Russian ambassador, who attempted to dominate the crown prince Adolphus Frederick and the Government. This spirited policy restored the waning prestige of the Hat party and firmly established their anti-Muscovite system. In 1746 Hopken was created a senator. In 1751 he succeeded Gustaf Tessin as prime minister, and controlled the foreign policy of Sweden for the next nine years. On the outbreak of the Seven Years' War, he con tracted an armed neutrality treaty with Denmark (1756) ; but in the following year acceded to the league against Frederick II. of Prussia. During the crisis of 1760-62, when the Hats were at last compelled to give an account of their stewardship, Hopken re tired from the senate as well as from the premiership. After the revolution of 1772 he re-entered the senate, finally retiring in 1780. The noble style of Hopken's biographies and orations earned for him the title of the Swedish Tacitus. He helped to found the Vetenskaps Akademi, and when Gustavus III. in 1786 established the Swedish Academy, he gave Hopken the first place in it.
See L. G. de Geer, Minne of Grefve A. J. von Hopken (Stockholm, 1882) ; Carl Silfverstolpe, Grefve Hopkens Skrifter (Stockholm, 1890 93) • (R. N. B.)