Marian Kamil Dziewanowski (27 June 1913,[1] Zhytomyr – 18 February 2005, Milwaukee, Wisconsin) was a historian of Poland, Russia and modern Europe.

In 1937–39 he was a foreign correspondent in Berlin, covering the Anschluss with Austria, the Munich Conference, and the German occupation of the Sudetenland.

Later he served in England as an instructor/interpreter at a school for paratroopers and saboteurs, as an editor of a secret radio station working with the resistance in Poland, as a BBC News commentator, and, in Washington, as an aide to the Polish military attache.

He moved to the United States, where at Harvard University he earned one of the first postwar doctorates in Russian and East European history.

[5] It was later revised and published by Harvard University Press as Communist Party of Poland: An Outline History (1959; 2nd ed., 1976).