North Grosvenordale (/ˈɡroʊvnərdeɪl/ GROHV-nər-dayl) is a village and census-designated place (CDP) in the town of Thompson in Windham County, Connecticut, United States.

The historic area around the cotton mill was listed in 1993 and is located on Riverside Drive (Route 12), Buckley Hill Road, Floral Avenue, Market Lane, and Marshall, Central, River, and Holmes Streets.

The mill located here remained relatively small until after the American Civil War, when it and the associated water privileges were purchased by William Grosvenor, an investor from Providence, Rhode Island.

They were occupied in clusters by different groups of immigrant workers, giving rise to neighborhood names such as "Little Canada" and "Swede Village".

The company also built some higher-quality single-family houses at the north end of the village, which were probably occupied by skilled specialists and supervisors.

The mill and surrounding company-related resources (an area of about 70 acres (28 ha) with more than 100 buildings), was listed on the National Register of Historic Places in 1993.