Little River (Brentwood, New Hampshire)

The Little River is a 7.3 mile long (11.7 km) river in the towns of Kingston and Brentwood in Rockingham County, New Hampshire, in the United States. It is a tributary of the Exeter River, part of the Great Bay/Piscataqua River watershed in the New Hampshire Seacoast region. The river should not be confused with the Little River of Exeter, New Hampshire, another tributary of the Exeter River less than three miles away.

The Little River rises in the northwestern part of Kingston, New Hampshire, and follows a winding course generally northeast through flat or slightly hilly terrain. The river turns north as it enters Brentwood and reaches the Exeter River east of Brentwood's town center.