Perry Stream is an 18.6-mile-long (29.9 km)^[1] river in northern New Hampshire in the United States. It is a tributary of the Connecticut River, which flows south to Long Island Sound, an arm of the Atlantic Ocean.

Perry Stream
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Location
Country	United States
State	New Hampshire
County	Coos
Town	Pittsburg
Physical characteristics
Source	Prospect Hill
• location	Pittsburg
• coordinates	45°14′59″N 71°13′26″W / 45.24972°N 71.22389°W / 45.24972; -71.22389
• elevation	2,750 ft (840 m)
Mouth	Connecticut River
• location	Pittsburg
• coordinates	45°4′18″N 71°18′15″W / 45.07167°N 71.30417°W / 45.07167; -71.30417
• elevation	1,450 ft (440 m)
Length	18.6 mi (29.9 km)
Basin features
Tributaries
• left	Perry Brook
• right	Falkenham Brook, Lamb Valley Brook, Otter Brook, Scott Brook

Perry Stream rises in the highlands forming the Canada–United States border, just west of the Connecticut Lakes. The entire length of the stream is within the town of Pittsburg, New Hampshire, the largest town in the state. The stream flows southwest through logging country, reaching the Connecticut River near the site known as Happy Valley.