The Seneca–Cayuga Nation is one of three federally recognized tribes of Seneca people in the United States. It includes Cayuga people and is based in Oklahoma, United States. This tribe has more than 5,000 people in 2011. They have a tribal jurisdictional area in the northeast corner of Oklahoma and are headquartered in Grove. They are descended from Iroquoian peoples who had relocated to Ohio from New York in the mid-18th century.