Cooperation with international organizations and regimes is an integral part of the European Union’s foreign policy. The purpose of the article is to systematize the reader’s perception of the EU’s relations with international organizations at present. The author relies on the organizational theory and, following that, intro-duces the concepts ‘organizational field’ and ‘institutional isomorphism’, as ap-plied to the EU’s relations with international organizations. Based on the analy-sis, the author developed a typology of the EU’s relations with international or-ganizations. A key feature in building the typology was the EU’s status in inter-national organizations, which varies from full membership with the right to vote to the absence of any formal status. In total, there were identified five possible scenarios for the development of the EU’s relations with international organiza-tions. It was discovered that the main obstacle to cooperation between them is the Bretton Woods nature of most modern international organizations and, as a result, their focus on working with sovereign states. The article also describes such a phenomenon of international relations as parallel representation - a situa-tion when both the EU itself and its member states are full members of the organ-ization. The developed typology not only systematizes the actual knowledge of the subject and explains the reasons why cooperation develops in different ways, but also confirms the cognitive potential of the organizational theory in analyzing the EU’s actions in the international arena.