The Mohegan are an Algonquian Native American tribe historically based in present-day Connecticut. Today the majority of the people are associated with the Mohegan Indian Tribe, a federally recognized tribe living on a reservation in the eastern upper Thames River valley of south-central Connecticut. It is one of two federally recognized tribes in the state, the other being the Mashantucket Pequot, whose reservation is in Ledyard, Connecticut. There are also three state-recognized tribes: the Schaghticoke, Paugusett, and Eastern Pequot.

The Algonquians are one of the most populous and widespread North American native language groups. They historically were prominent along the Atlantic Coast and in the interior regions along Saint Lawrence River and around the Great Lakes. This grouping consists of the peoples who speak Algonquian languages.