The main aim theis article is to study some issues of the relationship between the countries of Azerbaijan and Bulgaria in the context of cooperation in the field of economic and energy security. During the study, methods were used for content analysis of international documents, facts and events in international relations. The novelty of this study is an extensive study of the formation of relations of cooperation between Azerbaijan and Bulgaria, where it gradually grew to the level of strategic partnership. It is noted that the increasing role of Azerbaijan in ensuring the energy security of European countries has significantly increased its importance in the region. In conclusion, it is noted that in the modern period, Azerbaijan is the main initiator in the region of strategically important projects with oil and gas fields. In this regard, the countries of Eastern and Central Europe, in order to ensure their energy interests, began intensifying their cooperation with Azerbaijan more intensively. In this context, a special role is given to the strategic partnership between Azerbaijan and Bulgaria.
