The Oneida Indian Nation (OIN) or Oneida Nation is a federally recognized tribe of Oneida people in the United States. The tribe is headquartered in New York, where the tribe originated and held its historic territory long before European colonialism. It is an Iroquoian-speaking people, and one of the Five Nations of the Iroquois Confederacy, or "Haudenosaunee". Three other federally recognized Oneida tribes operate in locations where they migrated and were removed to during and after the American Revolutionary War: one in Wisconsin in the United States, and two in Ontario, Canada.