Sergey Gordeev (born November 22, 1972) is a Russian billionaire property developer.

Gordeev is an investor in Hyperloop One, a U.S. highspeed-travel startup. In 1995, he founded Rosbuilding, which bought shares of different plants. He bought a 20% stake in home builder PIK Group from billionaire Suleiman Kerimov in 2013, and eventually became the controlling shareholder. Last year, PIK acquired its main competitor, Morton Group, to become one of Russia's largest residential developers.

He has been active in trying to save architecturally significant buildings from the Soviet era, including the 1927 Melnikov House in Moscow. He has also saved the Narkomfin building in Moscow.Others have been sceptical of his motives, but he calls himself an idealist, and is inspired by museums such as Sir John Soane's Museum in London.