The international cooperation of the Archives of Yugoslavia refers to: cooperation with the archives and other similar institutions and associations abroad in the exchange of researchers; exchange of exhibitions; participation at international gatherings of archivists – meetings and gatherings of international organizations and associations of national archives (International Council on Archives in which the Archives has the A category status, CIBAL – NGO under the UNESCO auspices, etc.). Through a careful selection of the most important holdings that refer to Yugoslavia at the National Archives of Great Britain, Central State Archives of Italy, National, Diplomatic and Military Archives of France, Central Party Archives of the Marxism and Leninism Institute and Centre for the Preservation and Research of Documents of Latest History in Moscow and some other foreign archives, a major gap in the funds referring to the 1918-1945 period was bridged.