Newton is a town in Rockingham County, New Hampshire, United States.

In 1846, the New Hampshire legislature voted to contract the name to "Newton".

Newton is in southeastern New Hampshire, in southern Rockingham County.

The highest point in Newton is the summit of Brandy Brow Hill, at 289 feet (88 m) above sea level, located directly upon the southern corner of the town.

15.8% of all households were made up of individuals, and 5.6% had someone living alone who was 65 years of age or older.