Alexander Epiktetovich Olarovsky (also spelled Aleksandr and Olarovski / Olarovskii, Russian: Александр Эпиктетович Оларовский; 1845–1910[1]) was a diplomat of Imperial Russia who served as the first Russian envoy to Siam (now Thailand), from 1898 to 1907. He was instrumental in the establishment of relations between the two countries under the reigns of Russia's Tsar Nicholas II and Siam's King Chulalongkorn (Rama V).