Based on a basic web search, I have found that Chinookan peoples include several groups of Indigenous people of the Pacific Northwest in the United States who speak the Chinookan languages. Some Chinookan peoples are part of several federally recognized Tribes: the Yakama Nation (primarily Wishram), the Confederated Tribes of the Warm Springs Reservation (primarily Wasco), and the Confederated Tribes of the Grand Ronde Community. There are also other tribes that are not federally recognized, like the Clatsop-Nehalem Confederate Tribes.