Dmitry Aleksandrovich Pumpyansky (born 22 March 1964) is a Russian billionaire businessman.

He was the owner and chairman of OAO TMK,[1] a Russian global manufacturer of steel pipes for the oil and gas industry.

Dissertation topic: “Scientific foundations for the development of steels, alloys, and high-efficiency technologies for the production of next-generation OCTG and specialty pipe solutions.”[4] Pumpyansky started as a metals trader, then ran several metal factories, then took over the Sinarsky Pipe Factory.

[3] On March 9, 2022 TMK said in a statement that Pumpyansky is no longer a beneficiary of the Russian pipe manufacturer and has resigned from the company's board of directors.

[6] Pumpyansky is on the list of 96 "oligarchs" in Countering America's Adversaries Through Sanctions Act, passed into US law in August 2017.