The Committee of Solidarity with Indigenous Peoples of the Americas (CSIA-Nitassinan) is an organization created in 1978 upon the request of Indigenous delegates that gathered together for the first time at the UN in Geneva, Switzerland. They came in to reaffirm their existence, reclaim and defend their rights in international institutions. The CSIA is also the Group of Solidarity with Leonard Peltier, Sioux/Anishinaabe political prisoner in jail for 43 years in the USA.

Since its funding, this organization works on making better know the struggles in which are involved Indigenous Peoples from Alaska to Tierra del Fuego, and on diffusing and promoting their cultures, arts, and traditions, in France and Europe thanks to different events (days of solidarity, meetings, round-tables, exhibitions and music shows).