Lev Osipovich Belopolsky (4 July 1907 – 5 November 1990) was a Soviet ornithologist and marine biologist who founded the Biological Station of the Zoological Institute in Rybachiy.

His mother Agata Andreevna née Yakovleva was from Kyakhty and taught at the Agricultural Economics Institute in Detskoye Selo (Pushkin).

He was interested in sea birds from an early age and even while studying at the Moscow State University, he made trips into the Arctic.

In 1932-1934 he joined worked at the All-Union Arctic Institute and took part in oceanographic research aboard the icebreakers A. Sibiryakov (1932) and Chelyuskin (1933–1934); the latter expedition ended in disaster with the ship being crushed by ice and the rescue involved the survivors building a runway on ice for the rescue aircraft to land.

At the height of World War II in 1942 Belopolsky was appointed commander of the Murmansk base and was involved in helping find food for personnel posted there.