Mohegan Indians a tribe of the Algonquian linguistic stock. Originally the Mohegans lived along the Thames River in Connecticut. They were part of the Pequot tribe until the early 17th century, when, under the leadership of Uncas, they split from that tribe. In the Pequot War of 1637, the Mohegans sided with the English, who decimated the Pequot. The Mohegans took possession of Pequot land in Connecticut, and by the late 17th century were the only tribe of importance remaining in New England.

During the 18th century, the Mohegans, along with some other Algonquian tribes, moved to New York and established the town of Brothertown (or Brotherton). In the early 19th century, they migrated to Wisconsin. At present, there are a few Mohegan descendants in Connecticut and Wisconsin.