The article analyzes various approaches to the interpretation of the concept of an international human rights institution. The author’s definition of the concept of an international human rights institution is proposed, which should be understood as an international association endowed by the relevant states and (or) other entities with its own international legal personality, based on an international treaty or other document provided for by the norms of international law, the purpose of which is achieving goals related to the protection of the rights and freedoms of a person, and which, as a rule, has its own system of bodies acting on a permanent basis. It was noted that in the process of forming the institute of international organizations, the main attention of the states was focused on the creation of international intergovernmental organizations, which have executed and continue to execute a significant influence on the course of world events. International interstate organizations are one of the three important institutions through which interstate cooperation is carried out. Created in accordance with special international treaties, they have international legal personality and a clearly defined organizational structure, reflect the main goals, tasks and competence and act in accordance with the norms of international law. Despite the fact that international human rights institutions have a subsidiary character to national protection bodies, they provide considerable influence by making appropriate decisions based on the results of consideration of individual appeals from victims whose rights and freedoms are violated. The process of applying for the protection of rights and freedoms to international human rights institutions is a kind of one of the forms of activity of the relevant legal entity. The article highlights the main characteristics of international human rights institutions, which include: 1) contractual basis, 2) existence of defined goals, 3) appropriate organizational structure, 4) existence of independent rights and obligations, 5) possibility of considering applications from victims of rights violations and freedoms and the adoption of relevant decisions (conclusions, recommendations), 6) the possibility of influencing the defendant state, which violates the rights and freedoms of a person, 7) the permanent nature of the activity.