Holderness is a town in Grafton County, New Hampshire, United States. The population was 2,004 at the 2020 census. An agricultural and resort area, Holderness is home to the Squam Lakes Natural Science Center and is located on Squam Lake. Holderness is also home to Holderness School, a co-educational college-preparatory boarding school.
The Squam Lakes were a trade route for Abenaki Indians and early European settlers, who traveled the Squam River to the Pemigewasset River, then to the Merrimack River and seacoast. In 1751, Thomas Shepard submitted a petition on behalf of 64 grantees to colonial Governor Benning Wentworth for 6 miles square on the Pemigewasset River. The governing council accepted, and the town was named after Robert Darcy, 4th Earl of Holderness. The French and Indian War, however, prevented settlement until after the 1759 Fall of Quebec. The land was regranted as "New Holderness" in 1761 to a group of New England families,