Sergey Vladilenovich Kiriyenko (Russian: Серге́й Владиле́нович Кирие́нко) (born July 26, 1962) is a Russian politician. He served as the Prime Minister of Russia from March 23 to August 23, 1998 under President Boris Yeltsin. Currently, he is the head of Rosatom, the state nuclear energy corporation.

Sergei Kiriyenko's grandfather, Yakov Israitel, made his name as a devoted Communist and Lenin awarded him with an inscribed pistol for his good service to the party.

Sergei Kiriyenko was born in 1962 in Sokhumi, the capital of Abkhazian Autonomous Republic, Georgia, and grew up in Sochi, in southern Russia. After graduation from high school, Kiriyenko enrolled in the shipbuilding faculty at the Nizhny Novgorod (Gorky) Water Transport Engineers Institute, where his divorced father taught. At this time, he dropped the Jewish family name of his father and adopted Kiriyenko, the Ukrainian name of his mother.