Browns River
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Location
Country	United States
State	New Hampshire
County	Rockingham
Towns	Seabrook, Hampton Falls
Physical characteristics
Source
• location	Seabrook
• coordinates	42°53′49″N 70°52′7″W / 42.89694°N 70.86861°W / 42.89694; -70.86861
• elevation	40 ft (12 m)
Mouth	Hampton Harbor
• location	Seabrook, Hampton Falls
• coordinates	42°53′44″N 70°50′7″W / 42.89556°N 70.83528°W / 42.89556; -70.83528
• elevation	0 ft (0 m)
Length	2.9 mi (4.7 km)
Basin features
Tributaries
• left	Swains Creek
• right	Hunts Island Creek

The Browns River is a 2.9-mile-long (4.7 km) river, primarily tidal, in southeastern New Hampshire in the United States. It is part of the largest salt marsh in New Hampshire, covering over 3,800 acres (15 km²).^[1]

The river rises in the town of Seabrook just east of U.S. Route 1 and quickly enters the salt marsh and tidewater. For most of its length, the river forms the boundary between Seabrook and Hampton Falls. The river runs along the north side of Seabrook Station Nuclear Power Plant, then ends in Hampton Harbor, where it joins the Hampton River.

• List of rivers of New Hampshire