Gennady Nikolayevich Timchenko (born 1952) is a Russian businessman and billionaire. He founded and owns the private investment group, Volga Group, which specializes in investments in energy, transport and infrastructure assets. Previously he was a co-owner of Gunvor Group. In 2014, Timchenko was ranked 62nd on the Forbes magazine billionaires list, with an estimated fortune of $15.3 billion USD. He is known for being the Chairman of the Board of Directors of the Kontinental Hockey League, and President of the SKA (St. Petersburg) ice hockey club. He is a citizen of Russia, Finland and Armenia.

Gennady Timchenko also has stakes in various Russian businesses including gas company Novatek, petrochemichal producer Sibur Holding, railway operator Transoil and construction firm STG Group. Considered one of the most powerful people in Russia, he has close ties to President Vladimir Putin and, as a result, faced U. S. sanctions in 2014 in response to Russia's intervention in Crimea and eastern Ukraine.