| Little 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: | Town |
| Subdivision Name4: | North Hampton |
| Length: | 4.6miles |
| Source1 Location: | North Hampton |
| Source1 Coordinates: | 42.9992°N -70.8222°W |
| Source1 Elevation: | 70feet |
| Mouth: | Gulf of Maine (Atlantic Ocean) |
| Mouth Location: | North Hampton |
| Mouth Coordinates: | 42.9567°N -70.7786°W |
| Mouth Elevation: | 0feet |
| Tributaries Left: | North Brook, Oliver Brook |
| Tributaries Right: | Garland Brook |
The Little River is a 4.6adj=midNaNadj=mid[1] river in southeastern New Hampshire in the United States. It is located entirely in the town of North Hampton, and it flows directly into the Atlantic Ocean, south of Little Boars Head.
The river rises in a forested wetland in the northern part of North Hampton and flows south, passing under U.S. 1. The river turns southeast, passes through Mill Pond and under NH 111, and enters the Little River salt marsh. The river enters the Atlantic Ocean by passing under NH 1A, using a new, large culvert installed by the New Hampshire Coastal Program in an effort to improve tidal flow into the salt marsh.[2]