The Noank Historic District is a historic district encompassing the historic main part of the village of Noank in the town of Groton, Connecticut. The district contains a distinctive assortment of mid-to-late 19th-century residential architecture that is notable for its often picturesque woodwork. At the time of their construction, the village was primarily a worker village for nearby shipyards. The district was listed on the National Register of Historic Places in 1979.