Indigenous peoples, also known as first peoples, aboriginal peoples, native peoples, or autochthonous peoples, are ethnic groups who are descended from and identify with the original inhabitants of a given region, in contrast to groups that have settled, occupied or colonized the area more recently. Groups are usually described as indigenous when they maintain traditions or other aspects of an early culture that is associated with a given region. Not all indigenous peoples share this characteristic, sometimes having adopted substantial elements of a colonising culture, such as dress, religion or language. Indigenous peoples may be settled in a given locale/region or exhibit a nomadic lifestyle across a large territory, but they are generally historically associated with a specific territory on which they depend. Indigenous societies are found in every inhabited climate zone and continent of the world.
Since indigenous peoples are often faced with threats to their sovereignty, economic well-being and their access to resources on which their cultures depend, political rights have been set forth in international law by international organizations such as the United Nations, the International Labour Organization and the World Bank. The United Nations has issued a Declaration on the Rights of Indigenous Peoples to guide member-state national policies to the collective rights of indigenous people, such as culture, identity, language and access to employment, health, education and natural resources. Estimates put the total population of indigenous peoples from 220 million to 350 million.
The adjective indigenous is derived from the Latin word indigena, which is based on the root gen- 'to be born' with an archaic form of the prefix in 'in'. Any given people, ethnic group or community may be described as indigenous in reference to some particular region or location that they see as their traditional tribal land claim. Other terms used to refer to indigenous populations are aboriginal, native, original, or first (as in Canada's First Nations).