| 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: | Counties |
| Subdivision Name3: | Carroll, Strafford |
| Subdivision Type4: | Towns |
| Subdivision Name4: | Wakefield, Milton |
| Length: | 11.9miles |
| Source1: | Lovell Lake |
| Source1 Location: | Sanbornville |
| Source1 Coordinates: | 43.5525°N -71.0253°W |
| Source1 Elevation: | 572feet |
| Mouth: | Salmon Falls River/Northeast Pond |
| Mouth Location: | Milton |
| Mouth Coordinates: | 43.4622°N -70.9728°W |
| Mouth Elevation: | 413feet |
| Tributaries Right: | Churchill Brook/Pike Brook, Jones Brook |
The Branch River is an 11.9miles long[1] river located in eastern New Hampshire in the United States. It is a tributary of the Salmon Falls River, part of the Piscataqua River watershed leading to the Atlantic Ocean.
The river begins at the outlet of Lovell Lake at Sanbornville, a village in the town of Wakefield, New Hampshire. The river turns south, paralleling New Hampshire Route 16, passes through the village of Union, and turns southeast to reach the Salmon Falls River in Northeast Pond, within the town of Milton.
A significant tributary is Jones Brook.