Sergey Vladilenovich Kiriyenko is a Russian politician who has served as First Deputy Chief of Staff of the Presidential Administration of Russia since 5 October 2016. He previously served as the 30th Prime Minister of Russia from 23 March to 23 August 1998 under President Boris Yeltsin, and was head of the Rosatom nuclear energy company between 2005 and 2016. Kiriyenko was the youngest Prime Minister of Russia, taking the position at age 35. Ideologically a technocrat, he has played a leading role in the governance of Russian-occupied territories of Ukraine since the Russian invasion of Ukraine.

The Presidential Executive Office of Russia or the Presidential Administration of Russia is the executive office of the President of Russia created by a decree of Boris Yeltsin on 19 July 1991 as an institution supporting the activity of the president and the vice-president of Russian SFSR, as well as deliberative bodies attached to the president, including the Security Council.