Sergei Lousianin (Russian: Сергей Геннадьевич Лузянин, tr. Sergey Gennadievich Luzyanin, Chinese: 卢加宁, born 23 July 1956) is a Russian political scientist, orientalist, an expert on international relations in East Asia, domestic and foreign policy of China and Mongolia, security issues in the Asia-Pacific Region and Central Asia.