Diadychenko, Vadym [Дядиченко, Вадим; Djadyčenko], b 30 May 1909 in Chernihiv, d 24 August 1973 in Kyiv. Historian, research associate of the Institute of History of the Academy of Sciences of the Ukrainian SSR, and, from 1948, chairman of its department of feudal history. In 1962 he became a professor of the history of Ukraine at Kyiv University. He published works on Ivan Mazepa’s period, particularly on Semen Palii. He is the author of Narysy suspil'no-politychnoho ustroiu Livoberezhnoï Ukraïny kintsia XVII–pochatku XVIII st. (Studies of the Sociopolitical Structure of Left-Bank Ukraine at the End of the 17th and the Beginning of the 18th Century, 1959). He also co-authored Dopomizhni istorychni dystsypliny (Auxiliary Historical Disciplines, 1963) and Istoriia selianstva URSR (A History of the Peasantry of the Ukrainian SSR, 1967), and co-edited Istoriia Ukraïns'koï RSR (History of the Ukrainian SSR, vol I, 1953).

[This article originally appeared in the Encyclopedia of Ukraine, vol. 1 (1984).]