Pyotr Petrovich Vtorov (Russian: Пётр Петро́вич Вто́ров; 1938–1979) was a Soviet scientist biogeographer, ecologist, zoologist and nature conservation activist.

Then he worked 8 years in field research in the Tien Shan, he published dozens of papers and several scientific monographs in biogeography and biogeophysics.

In 1968 he developed a research program for the study of energy, chemical and information interactions in terrestrial ecological systems of various types.

Pyotr Vtorov collaborated with more than 30 scientists, taxonomists, who, using the materials he collected, described several dozen species of invertebrates that were new to science.

Some of them were named after him: Vtorov independently learned English, Kyrgyz, French, German, Spanish, Portuguese, Polish and Czech.

In 1980, another textbook for students and teachers was published, in which P. Vtorov showed his long-standing passion for ornithology Identifier of birds of the USSR fauna.

Some of his textbooks with Nikolay Drozdov were translated from Russian: In 1970 Vtorov repeatedly appeared on the Soviet TV show In the World of Animals.

This jubilee Assembly, timed to coincide with the 30th anniversary of the IUCN, brought together leading scientists and conservationists from around the world.

On October 19 he was admitted to the Botkin hospital with a diagnosis of a blast crisis (the terminal stage of chronic myelogenous leukemia).