| New 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: | Coos |
| Subdivision Type4: | Townships |
| Subdivision Name4: | Sargents Purchase, Pinkhams Grant |
| Length: | 2.2miles |
| Source1: | Gulf of Slides |
| Source1 Location: | Mount Washington |
| Source1 Coordinates: | 44.2436°N -71.2906°W |
| Source1 Elevation: | 4380feet |
| Mouth: | Cutler River |
| Mouth Location: | Pinkham Notch |
| Mouth Coordinates: | 44.255°N -71.2531°W |
| Mouth Elevation: | 612order=flipNaNorder=flip |
The New River is a 2.2adj=midNaNadj=mid[1] stream in the White Mountains of New Hampshire in the United States. It is a tributary of the Cutler River, part of the Saco River watershed flowing to the Atlantic Ocean in Maine. The river is within the townships of Sargent's Purchase and Pinkham's Grant in Coos County.
The New River rises in the Gulf of Slides, a small glacial cirque at the foot of Boott Spur, a southern extension of Mount Washington. Flowing northeast, the stream drops rapidly down the western slopes of Pinkham Notch, joining the Cutler River in the floor of the notch at the Route 16 crossing, just south of the notch's height of land, and just upstream from the Cutler River's merging with the Ellis River.