Groveton is a census-designated place (CDP) in the town of Northumberland in Coos County, New Hampshire, United States. The population was 1,118 at the 2010 census. It is located at the intersection of U.S. Route 3 and New Hampshire Route 110.
The paper mill, which was the primary employer in Groveton, was closed by Wausau Papers in 2008.
Groveton is part of the Berlin, NH–VT Micropolitan Statistical Area.