The Nez Perce (/ˌnɛz ˈpɜːrs, ˌnɛs -/ ; autonym in Nez Perce: nimíipuu, meaning 'we, the people') are an Indigenous people of the Plateau who still live on a fraction of the lands on the southeastern Columbia River Plateau in the Pacific Northwest. This region has been occupied for at least 11,500 years.
Members of the Sahaptin language group, the Nimíipuu were the dominant people of the Columbia Plateau for much of that time, especially after acquiring the horses that led them to breed the Appaloosa horse in the 18th century.