The Platte River Tribe is a collective of four Native American tribes, the Otoe, Otos, Otoes, and Oto. The Otoe are a federally recognized tribe located in Nebraska and Oklahoma, while the Otos are a federally recognized tribe located in Nebraska and Kansas. The Otoes are a federally recognized tribe located in Nebraska and Iowa, and the Oto are a federally recognized tribe located in Oklahoma. All four tribes are part of the larger Great Plains Indian culture.