D mitry Pumpyansky is a Russian oligarch who built his fortune in the steel pipe manufacturing industry. He was the owner and chairman of the TMK Group, one of the world's largest producers of steel pipes for the oil and gas industry. He began his career as a metals trader in the 1990s before gaining control of the Sinarsky Pipe Plant during the privatization era.

He used this plant as a foundation to consolidate control over several other pipe-making factories, creating the industrial giant TMK. He also controlled the industrial company Sinara Group, which has interests in machine building and finance. Pumpyansky was a powerful and influential figure in Russia's industrial heartland in the Urals region. Due to his prominence and his meetings with President Vladimir Putin, he was sanctioned by the European Union and the United Kingdom in 2022 following the invasion of Ukraine. In response to the sanctions, he stepped down from his companies and transferred his assets.