Oleg Vitalyevich Khlevniuk (Russian: Олег Витальевич Хлевнюк, born July 7, 1959 Vinnytsia, Ukrainian SSR) is a historian and a senior researcher at the State Archive of the Russian Federation in Moscow. Much of his writing on Stalinist Soviet Union is based on newly released archival documents, including personal correspondence, drafts of Central Committee paperwork, new memoirs, and interviews with former functionaries and the families of Politburo members. Gleb Pavlovsky has characterized him as a "leading Russian historian of Stalinism." He also a corresponding fellow of Royal Historical Society.
- The History of the Gulag, originally published in Russian.
- Cold Peace: Stalin and the Soviet Ruling Circle, 1945–1953
- The role of Gosplan in economic decision-making in the 1930s
- In Stalin's Shadow: The Career of "Sergo" Ordzhonikidze
- Master of the House: Stalin and His Inner Circle
- Stalin: New Biography of a Dictator
Khlevniuk was awarded the Alexander Nove Prize (with Yoram Gorlizki) by the British Association for Slavonic and East European Studies 2004 for the book Cold Peace: Stalin and the Soviet Ruling Circle, 1945-1953.
In 2016, Pushkin House UK recognized his Stalin: New Biography of a Dictator as "the best Russian book in English translation" for that year.