Gilmanton is a town in Belknap County, New Hampshire, United States.

First known as "Gilmantown", the town was home to the Gilman family, originally settled at Exeter.

[4] Twenty-four members of the Gilman family received land grants in the new town of Gilmanton.

(Other families related to the Gilmans also received grants in the new town, including the Dudleys, the Leavitts, the Folsoms and the Coffins.

A parish first called "Averytown", the site of an unprofitable iron-mining enterprise, is still known as Gilmanton Iron Works.

[8] The highest point in Gilmanton is Mount Mack, at 1,945 feet (593 m) above sea level, on the town line with Gilford.

Gilmanton Ironworks is located in the eastern part of town along NH 140, near the outlet of Crystal Lake.

In the New Hampshire Senate, Gilmanton is in the 6th district, represented by Republican James Gray.

On the New Hampshire Executive Council, Gilmanton is in the 2nd district, represented by Democrat Andru Volinsky.