Sergey Alexandrovich Tereshchenko (Kazakh: Сергей Александрович Терещенко, romanized: Sergey Aleksandroviç Tereşçenko; Russian: Сергей Александрович Терещенко, romanized: Sergey Aleksandrovich Tereshchenko, Ukrainian: Сергій Олександрович Терещенко, romanized: Serhiy Oleksandrovych Tereshchenko; 30 March 1951 – 10 February 2023) was a Kazakh politician. He served as the Prime Minister of Kazakhstan from 1991 to 1994 and later as the acting chairman of Otan from 1999 to 2002.

Tereshchenko was born in the town of Lesozavodsk, which was in the Primorsky Krai of the Russian Soviet Federative Socialist Republic. In 1969, he moved to the Kazakh Soviet Socialist Republic, where he studied mechanical engineering at the Kazakh National Agrarian University, where he graduated in 1973. After graduation, Tereshchenko was sent to work as chief engineer of the collective farm in Shymkent (known at the time as Chimkent). In 1975, he was elected First Secretary of the Tulkubas District Komsomol Committee, where he worked for four years. In the seven years after leaving the post, Tereshchenko served as the head local party/executive positions in Shymkent.

In the spring of 1990, Tereshchenko served as deputy chairman of the Supreme Soviet of the Kazakh SSR. For about one and a half years after leaving that post, he was the first secretary of the Communist Party Central Committee in Chimkent. He briefly elected by Supreme Council as Vice President of the Kazakh SSR from April to May 1990.^[1] In the remaining months of 1991, Tereshchenko assumed the post of Prime Minister of the Kazakh SSR.^[2] When the country gained independence on 16 December, he was appointed to the newly created post of Prime Minister. During his tenure, his government began work to privatize formerly state-run companies.^[3] He also proposed strengthening executive power in order to bring about economic reforms in the country.^[4]

In late May 1994, Tereshchenko suffered a defeat when the Parliament of Kazakhstan passed a vote of no confidence in the Tereshchenko Government. He held out for several months until he was dismissed by President Nursultan Nazarbayev on 12 October following a corruption scandal involving his Minister of Internal Affairs that month. Akezhan Kazhegeldin was chosen to be Tereshchenko's successor, which followed his retirement from public service. After his dismissal, he served as the President of the International Foundation "Integration", the main goal of which is the start of a integration process of Kazakhstan into the economic, political, and cultural space of world stage. In 1998, he was among those supporting the re-election of Nursultan Nazarbayev for the presidency.^[5]

Tereshchenko was an ethnic Ukrainian and was one of the first from his ethnicity to take office in independent Kazakhstan. His wife, Yevgenia Grigorievna, was a Russian language teacher of literature. They had two daughters, Nina and Elena.

Tereshchenko died in 10 February 2023, at the age of 71.^[6]

• История в лицах – Сергей Терещенко (in Russian)