The Holderness School is a private, coeducational college-preparatory school in Holderness, near Plymouth, New Hampshire in the United States. The student body of 300 is drawn from 22 U.S. states and 14 foreign countries. While Holderness operates primarily as a boarding school, it also enrolls 25 day students. John McVeigh is currently Holderness School's 10th Head of School (headmaster). McVeigh's predecessor was R. Phillip Peck, M.Ed. In the summer the campus is used as a site for various Gordon Research Conferences.

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.