|First Deputy Chairman of the Council of Ministers of the Soviet Union|
26 March 1965 – 28 November 1978
Serving with Dmitry Polyansky and Nikolai Tikhonov
|Preceded by||Dmitriy Ustinov|
|Succeeded by||Dmitry Polyansky|
|First Secretary of the Communist Party of Byelorussia|
28 July 1956 – 30 March 1965
|Preceded by||Nikolai Patolichev|
|Succeeded by||Pyotr Masherov|
|Chairman of the Council of Ministers of the Byelorussian SSR|
24 July 1953 – 28 July 1958
|Preceded by||Aleksey Kleshchev|
|Succeeded by||Nikolay Avkhimovich|
|Full member of the 22nd, 23rd, 24th, 25th Politburo|
26 March 1965 – 28 November 1978
|Candidate member of the 20th, 22nd Presidium|
29 June 1957 – 26 March 1965
|Born||Kirill Trofimovich Mazurov
25 March 1914
Rudnia-Pribytkovskaya, Homyel Voblast, Imperial Russia
|Died||19 December 1989
Moscow, Union of Soviet Socialist Republics
|Political party||Communist Party of the Soviet Union|
Kirill Trofimovich Mazurov (Belarusian: Кіры́ла Трафі́мавіч Ма́зураў, Russian: Кирилл Трофимович Мазуров; born 25 March 1914, Homyel Voblast, Belarus – died 19 December 1989) was a Belarusian Soviet politician.
Mazurov was originally a construction technician, and graduated from the Homyel highway technical school in 1933. He joined the Communist Party of the Soviet Union in 1940 and the Red Army in 1941. During the Great Patriotic War, he participated in military actions as a political instructor, a battalion commander and an instructor of the army's political department.
Mazurov left the army in 1942 to become secretary of the central committee of the Belarusian Komsomol. Mazurov then moved to a Soviet partisan unit where he became president of the central staff.
After the war, Mazurov returned to his position as secretary of the Belarusian Komsomol. In 1947 he joined the apparatus of the Communist Party of Byelorussia. From 1949 to 1950 he was the First Secretary of the Minsk city committee and from 1950 to 1953 first secretary of the Minsk regional committee of the Communist Party of Byelorussia. From 1950 to 1979, he was deputy of the Supreme Soviet of the Soviet Union. After Joseph Stalin's death, he actively supported Nikita Khrushchev. He was chairman of the council of ministers of BSSR (1953–1965), then First Secretary of the Communist Party of Belarus (1956–1965). In 1964 he was appointed candidate member of the Politburo of the CPSU Central Committee and was then a full member from 26 March 1965 to 27 November 1978. He was also the First Deputy Chairman of the Council of Ministers(1965–1976).
Mazurov retired in 1978.
In the eighties, he gave an interview to Izvestia in which he said he was the envoy of Brezhnev who commanded the Warsaw Pact invasion force in Czechoslovakia in 1968 under the code name "General Trofymov". He said he regretted his action, added "today I would not accept to guide one similar operation" and asked the Czechs to forgive the Soviets. 
He was awarded the Order of Lenin five times, the Order of the Red Banner, the Order of the Patriotic War 1st class and was a Hero of Socialist Labor in 1971. He received other military medals as well.
- Залесский К.А. Империя Сталина. Биографический энциклопедический словарь. Москва, Вече, 2000 (Zalesskiy K.A. Stalin's Empire. Biographical encyclopaedic dictionary. Moscow, Meeting, 2000)
- Soviet military encyclopedia in 8 volumes, Vol. 5