The purpose of this article is to study the main types and forms of participation of the Crimean Tatar people aimed at protecting the rights of the Crimean Tatars as an indigenous people of Ukraine in the international arena after the occupation of the peninsula in 2014. The article analyzes the problem of violations of international human rights law and the rights of indigenous peoples on the territory of the occupied peninsula. The paper outlines the main types and forms of participation of Crimean Tatars aimed at protecting the rights of indigenous people in the international arena, in particular, the participation of the Mejlis as a representative body of Crimean Tatars, as well as leaders of the Crimean Tatar indigenous people and human rights organizations, etc. The author also provides a list of international documents adopted since the beginning of the occupation of Crimea, which were adopted as a sign of support for Ukraine and condemnation of Russian aggression and occupation of Crimea and criminal actions of the Russian authorities. The author concludes that such participation of the Crimean Tatar indigenous people, aimed at protecting the rights of the indigenous people of Ukraine in the international arena, has become an important element of Ukraine's diplomatic struggle for Crimea. It is also emphasized that cooperation between Ukraine and the Crimean Tatar indigenous people is an important guarantee of the future processes of de-occupation and reintegration of Crimea, as well as the preservation of Ukrainian statehood on the peninsula.