Igor Krasnov was born on December 24, 1975, in Arkhangelsk, he was a member of the Lenin Komsomol.

He began his service as an investigator in the Kholmogorsky district of the Arkhangelsk region.

April 30, 2016, Krasnov was appointed Deputy Chairman of the Investigative Committee of the Russian Federation by Alexander Bastrykin.

On January 20, 2020, Russian President Vladimir Putin proposed that the Federation Council approve Igor Krasnov as the Prosecutor-General of Russia, replacing Yuri Chaika.

[4] In response to the Russian invasion of Ukraine, on 6 April 2022 the Office of Foreign Assets Control of the United States Department of the Treasury added Krasnov to its list of persons sanctioned pursuant to Executive Order 14024.