Dmitry Mezentsev

Dmitry Mezentsev
Дмитрий Мезенцев
Mezentsev in 2022
Presidential Plenipotentiary Representative in the Constitutional Court
Assumed office
17 April 2025
PresidentVladimir Putin
Preceded by Aleksandr Konovalov
General Secretary of the Union State of Russia and Belarus
In office
19 March 2021  17 April 2025
Preceded byGrigory Rapota
Succeeded bySergey Glazyev
Ambassador of Russia to Belarus
In office
30 April 2019  19 March 2021
Preceded byMikhail Babich
Succeeded byYevgeny Lukyanov
Russian Federation Senator
from Sakhalin Oblast
In office
31 December 2015  30 April 2019
Preceded byZhanna Ivanova
Succeeded byGrigory Karasin
Secretary-General of the Shanghai Cooperation Organisation
In office
1 January 2013  31 December 2015
Preceded byMuratbek Imanaliyev
Succeeded byRashid Alimov
5th Governor of Irkutsk Oblast
In office
8 June 2009  18 May 2012
Preceded byIgor Yesipovsky
Succeeded bySergey Yeroshchenko
Personal details
Born (1959-08-18) 18 August 1959
Leningrad, Russian Soviet Federative Socialist Republic, Soviet Union
Political partyUnited Russia

Dmitry Fyodorovich Mezentsev (Russian: Дми́трий Фёдорович Ме́зенцев; born 18 August 1959) is a Russian politician and diplomat serving as the Presidential Plenipotentiary Representative in the Constitutional Court of Russia since April 2025. Previously he served as the State Secretary of the Union State of Russia and Belarus (2021–2025), Russia's Ambassador to Belarus (2019–2021), Senator from Sakhalin Oblast (2015–2019), Secretary-General of the Shanghai Cooperation Organisation (2013–2015) and Governor of Irkutsk Oblast (2009–2012).

In 2012 Mezentsev ran for President of Russia, but was rejected by the Central Election Commission.