Northeastern Connecticut, also known as the Quiet Corner, is a region of the state of Connecticut, located in the northeastern corner of the state.  It is generally associated with Windham County, but also incorporates eastern sections of Tolland County and the northern portion of New London County. The most frequently cited boundary is the semi-rural town of Coventry, which is more rustic than the more suburban towns to the west.
Eastern Connecticut is more rural than southern or central Connecticut, with large areas of farmland, rivers and lakes, and state forests. Its population centers are largely rural and semi-rural towns, many with populations below 5,000. It is one of the least-urbanized districts along the Northeast Megalopolis. Many of the towns are within a long commuting distance of Boston, but none are considered a part of the Boston Metropolitan Area, with only the Interstate 395 freeway spur passing through the "Quiet Corner" as a nationally signed part of the Interstate Highway System. Interstate 84 also passes near the western end of the region and cuts through the northwestern part. Much of the region is part of the Last Green Valley National Heritage Corridor.
Windham, including the borough of Willimantic, is the largest town in the region with a population of 25,000.  The area also has a long history with watermills, due to its many fast river and streams. Many were on the Willimantic River or the Quinebaug River. 
The region is popular with tourists for its traditional New England scenery, culture, locally produced foods and bed and breakfasts, and is especially noted for its many antique shops. Major attractions in the Eastern Connecticut include the main University of Connecticut campus in Storrs; the birthplace of Samuel Huntington in Scotland; Route 169, a National Scenic Byway running north-and-south through the region; the Prudence Crandall House Museum in Canterbury; the Nathan Hale Homestead in Coventry; and the many antiques shops of Pomfret, Putnam, and Woodstock.
The region has seen a resurgence in the production of local foods, producing local wines, cheeses, ice cream, apples, maple syrup, beer, and a variety of heirloom crops.
- Hershey, Alex (2005-10-09). "New England's Quiet Corner". Los Angeles Times. Retrieved 2007-12-17.
- Bureau, U.S. Census. "American FactFinder - Community Facts". factfinder.census.gov. Retrieved 2016-11-01.
- "Tour of Eastern CT Mill Towns,Villages, and Mills". New England Yarn and Pattern. Tripod.com. Retrieved November 1, 2016.