The works included in the collection are devoted to the study of topical problems of Caucasian studies and Byzantine studies. On the basis of new materials, certain stages of Armenian-Georgian-Greek historical and cultural relations are considered, new sources are identified and characterized. For the first time, a number of new pages of scientific heritage are published, as well as the ancient Armenian translation of the Epitaph by Gregory Nazianzin. Intended for historians and philologists, as well as for a wide range of readers.