The Institute has carried on an uninterrupted cooperation with the similar scientific institutions in the world. Some of the results of that cooperation have been published: The Greek Documents of the Hilandar Monastery (with The Institute for Byzantine Studies in Paris), Byzantine Inscriptions on Portraits from Macedonia (with The Institute for Byzantine Studies in Athens). From 2002 to 2005, so-called target projects were introduced and developed (including the already mentioned cooperation with foreign partners): Actes de Chilandar II; Donors’ Inscriptions on Frescoes from the XIIth to the XIIIth Century. Based on the bilateral agreement of Serbia and Greece on the cultural and scientific cooperation, the Institute for Byzantine Studies of the SASA and the Institute for Byzantine Research in Athens have carried out a joint project (2005–2006) on the Serbian-Byzantine relations prior to the Turkish conquest. The Institute has also participated, through some of its researchers, together with the Faculty of Philosophy in Belgrade (Department for Byzantine Studies) and University of Sorbonne–Paris IV in the project L’image de l’autre (2006–2008). The Institute has established a two-year long project with The Institute of Balkan Studies and Center of Thracology of The Bulgarian Academy of Sciences entitled The Balkans as a Global Crossroads: Encounter and Exchange.
The current project of the Institute Tradition, innovation and identity in the Byzantine world is also of an international character, engaging colleagues from Germany, Austria and Greece in the research work. The editorial board of ZRVI has also five very distinguished scholars in the field of Byzantine studies from countries with a long tradition of this discipline (Austria, Russia, Greece, France, and Germany). On the other hand, some of the associates of the Institute have been appointed as members of editorial boards of distinguished foreign periodicals and journals.
Since its foundation, the Institute for Byzantine Studies has hosted a number of foreign researchers and University professors, who gave lectures or participated at scientific meetings. During the past 50 years the associates of the Institute have been a part of the Yugoslav (today Serbian) Committee for Byzantine Studies. The president of the Committee, Ljubomir Maksimović, is currently vice–president of the Association international des études Byzantines (AIEB).