Cheyenne refers to an Indigenous people of the Great Plains in the United States. Historically, the Cheyenne comprised two distinct Native American tribes known as the Só'taeo'o (or Só'taétaneo'o) and the Tsétsėhéstȧhese, which merged during the early 19th century.
The Cheyenne people are currently divided into two federally recognized nations. The Southern Cheyenne are enrolled in the Cheyenne and Arapaho Tribes located in Oklahoma, while the Northern Cheyenne are enrolled in the Northern Cheyenne Tribe on the Northern Cheyenne Indian Reservation in Montana. The Cheyenne language is a member of the Algonquian language family.