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

Originally a part of Dover, boundary disputes among early river settlers caused this area to be called "Bloody Point".

About 1725, the parsonage was built near the Town Forest, considered one of the oldest in the United States.

In 1794, a bridge was completed across Little Bay from Fox Point in Newington to the south bank of the Bellamy River in Dover, by way of Goat Island—a major engineering feat in its day.

In 1952, the House Armed Services Committee authorized acquiring by eminent domain large tracts to create Pease Air Force Base, which opened on June 30, 1956.

Approximately 60% of the installation lay in Newington, including land in the town's center, and 40% was in neighboring Portsmouth.

Military personnel in 1990 began leaving the base, which officially closed on March 31, 1991.

Although the Air National Guard retained some property, the old base has been intensely redeveloped, primarily in the Portsmouth section, as the Pease International Tradeport, a business park.