The Brothertown Indians, located in Wisconsin, are a Native American tribe formed in the late 18th century from communities descended from Pequot, Narragansett, Montauk, Tunxis, Niantic, and Mohegan (Algonquian-speaking) tribes of southern New England and eastern Long Island, New York. In the 1780s after the American Revolutionary War, they migrated from New England into New York state, where they accepted land from the Iroquois Oneida Nation in Oneida County.

The Pequot are a Native American people of Connecticut. The modern Pequot are members of the federally recognized Mashantucket Pequot Tribe, four other state-recognized groups in Connecticut including the Eastern Pequot Tribal Nation, or the Brothertown Indians of Wisconsin. They historically spoke Pequot, a dialect of the Mohegan-Pequot language, which became extinct by the early 20th century. Some tribal members are undertaking revival efforts.