This article presents the share of Polish researchers in the field of Byzantine history in 21 of the International Congresses of Byzantine Studies, held in the years 1924-2006. The starting point of this article are the official statistics of these conferences, developed by prof. M. Nystazopoulou-Pélékidou and prof. V. Tăpkova-Zaimova. These official statistics have been revised and expanded with the participation of Poles in these congresses. Consequently, given not only the number of Poles taking part in various congresses, but also the titles given by their papers, the language in which these papers were delivered and scientific centers, what these researchers represented. Consideration was also given Polish researchers working abroad. In this way was constructed some kind of synthesis, which shows from a statistical point of view, the contribution of Polish investigators of Byzantine history at different congresses, held in the years 1924-2006.