This article deals with the role of the International Federation of Red Cross and Red Crescent Societies (IFRC) in the development of humanitarian diplomacy. As one of the largest humanitarian organizations in the world, the IFRC plays a key role in coordinating and providing assistance in emergencies, as well as in strengthening international cooperation and advocacy. The article analyses the main areas of IFRC activities, including its efforts to provide humanitarian assistance in areas of armed conflict, natural disasters and other crisis situations. The mechanisms of the Federation's interaction with state structures, international organizations and non-governmental actors are considered, and their effectiveness is assessed. Special attention is paid to such aspects as resource mobilization, development and implementation of emergency preparedness programs, and support and protection of vulnerable groups. The author provides a detailed analysis of key initiatives and programs implemented by the IFRC, such as the “More Than Aid” strategy, the “Time for Humanitarian Action” initiative and climate change programs. The article uses general scientific methods and the method of situation analysis, which made it possible to determine the scope of scientific research and clarify the basic concepts and categories associated with the formation and development of the phenomenon of humanitarian diplomacy. In the process of preparing the article, such general scientific methods of cognition as analysis, synthesis, deduction, induction, comparison, analogy, abstraction and generalization were used. A comprehensive and systematic study of the topic of the article is missing in the science of international relations. The article concludes on the relevance of the IFRC's activities for the development of humanitarian diplomacy and gives recommendations for strengthening its role in the future. The author proposes strategic directions to improve the IFRC's engagement with various actors in the international arena and to coordinate humanitarian efforts better globally.