Mystic is a village and census-designated place (CDP) in Groton and Stonington, Connecticut; it has no independent government because it is not a municipality in the state of Connecticut.
Historically, Mystic was a leading seaport of the area, and the story of Mystic's nautical connection is told at Mystic Seaport, the nation's largest maritime museum which has preserved a number of sailing ships, most notably the whaling ship Charles W. Morgan. The village is located on the Mystic River, which flows into Long Island Sound, providing access to the sea. The Mystic River Bascule Bridge crosses the river in the center of the village. According to the Mystic River Historical Society, the name "Mystic" is derived from the Pequot term "missi-tuk", describing a large river whose waters are driven into waves by tides or wind. The population was 4,205 at the 2010 census.