Andrey Petrovich Semyonov-Tyan-Shansky (Russian: Андре́й Петро́вич Семёнов-Тянь-Ша́нский) (1866–1942) was a Russian entomologist specializing in beetles. He was the son of Pyotr Semyonov-Tyan-Shansky. He entered the St. Petersburg University in 1885. In 1888 and 1889 he traveled to the Trans-Caspian and Turkestan regions in search of insects, then in 1890 became a curator at the Imperial Academy of Sciences.
