| North Branch River | |
| Pushpin Map: | New Hampshire#USA |
| Pushpin Map Size: | 250 px |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New Hampshire |
| Subdivision Type3: | County |
| Subdivision Name3: | Rockingham |
| Subdivision Type4: | Towns |
| Subdivision Name4: | Deerfield, Candia, Raymond |
| Length: | 8.2miles |
| Source1: | Beaver Pond |
| Source1 Location: | Deerfield |
| Source1 Coordinates: | 43.1069°N -71.3281°W |
| Source1 Elevation: | 484feet |
| Mouth: | Lamprey River |
| Mouth Location: | Raymond |
| Mouth Coordinates: | 43.0608°N -71.2269°W |
| Mouth Elevation: | 202feet |
The North Branch River is an 8.2adj=midNaNadj=mid[1] river in southeastern New Hampshire in the United States. It is a tributary of the Lamprey River, part of the Great Bay and Piscataqua River watershed leading to the Atlantic Ocean.
The river begins in Bear Brook State Park, in Deerfield, New Hampshire, at the outlet to Beaver Pond. Flowing southeast, it quickly leaves the park, then enters the town of Candia. It passes under New Hampshire Route 43 just south of the village of Candia, then reaches NH 27 just before entering the town of Raymond, where the river ends at the Lamprey River.