Acknowledging and overcoming the political invisibility of Indigenous peoples in international relations is one among many initiatives towards both decolonizing knowledge on global politics and supporting Indigenous agency worldwide. The study of Indigenous diplomacies thus stands out. Diplomatic practices by those groups aim not only at long-term mediation with the European-tailored hegemonic States system, before which Indigenous sovereignties have historically been occluded. But, taken in their own ontological significance, Indigenous diplomacies include interactions with other types of entities -- human, non-human, and spiritual alike. The present paper intends to explore the scholarship on Indigenous diplomacies across its various dimensions. In dialogue with recent scholarship on sustainable diplomacies, and with voices from Inuit, Dene, Yanomami, Guarani-Kaiowá, and many other peoples, this paper searches for understanding on how and before which institutions Indigenous diplomacies are performed. The idea of sovereignty is believed to support Indigenous political interactions, and the analysis of Indigenous sovereignties has the potential to  improve our understanding of contemporary global politics. Post/de/anti-colonial thought can contribute for the theory and practice of Indigenous diplomacies, given the shared experiences of oppression under the Colonial/Modern world-system. Above all, since many Indigenous peoples worldwide come from anti-state political traditions, adopting a definition of diplomacy that is able to encompass relations with non-state actors is an important step towards supporting politics in terms relevant for those Indigenous agents themselves.  

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