The Ponca Tribe of Indians of Oklahoma, also known as the Ponca Nation, is one of two federally recognized tribes of Ponca people. The other is the Ponca Tribe of Nebraska. Traditionally, peoples of both tribes have spoken the Omaha-Ponca language, part of the Siouan language family. They share many common cultural norms and characteristics with the Omaha, Osage, Kaw, and Quapaw peoples.

The Ponca people are a nation primarily located in the Great Plains of North America that share a common Ponca culture, history, and language, identified with two Indigenous nations: the Ponca Tribe of Indians of Oklahoma or the Ponca Tribe of Nebraska.