G rigory Berezkin is a Russian oligarch with a diversified business empire that has spanned energy, media, and infrastructure. He began his career in the oil trading business in the 1990s and became a powerful and well-connected figure. He is the founder and owner of the ESN Group, his primary investment vehicle.

His business interests have been varied, including a major stake in an electrical utility, ownership of a major Russian media holding (which owned the Russian edition of Forbes for a time), and interests in railways and energy infrastructure. He is widely considered to be a well-connected oligarch with close ties to the Kremlin, particularly to senior figures in the Russian government and state-owned enterprises like Russian Railways. Due to his proximity to the Russian government, he has been sanctioned by Western countries.