| Little River | |
| Pushpin Map: | Massachusetts#New Hampshire#USA |
| Pushpin Map Size: | 250 px |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | States |
| Subdivision Name2: | New Hampshire, Massachusetts |
| Subdivision Type3: | Counties |
| Subdivision Name3: | Rockingham, NH, Essex, MA |
| Subdivision Type4: | Towns |
| Subdivision Name4: | Kingston, NH, Plaistow, NH, Haverhill, MA |
| Length: | 12.9miles |
| Source1 Location: | Kingston, NH |
| Source1 Coordinates: | 42.8769°N -71.0889°W |
| Source1 Elevation: | 130feet |
| Mouth: | Merrimack River |
| Mouth Location: | Haverhill, MA |
| Mouth Coordinates: | 42.7725°N -71.0828°W |
| Mouth Elevation: | 0feet |
| Tributaries Left: | Seaver Brook, Snows Brook |
| Tributaries Right: | Kelly Brook, Bryant Brook, Foote Brook, Fishin Brook |
The Little River is a 12.9adj=midNaNadj=mid river in New Hampshire and Massachusetts in the United States. It is a tributary of the Merrimack River, part of the Gulf of Maine watershed.
The Little River rises in Kingston, New Hampshire, flows south through Plaistow, and enters the city of Haverhill, Massachusetts, where it joins the Merrimack River. Most of the Little River's course is marked by suburban and urban development.[1]