| Exeter 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: | Chester, Sandown, Danville, Raymond, Fremont, Brentwood, Exeter |
| Length: | 40.5miles |
| Source1 Location: | Chester |
| Source1 Coordinates: | 42.9603°N -71.2717°W |
| Source1 Elevation: | 455feet |
| Mouth: | Squamscott River |
| Mouth Location: | Exeter |
| Mouth Coordinates: | 42.9819°N -70.9453°W |
| Mouth Elevation: | 0feet |
| Tributaries Left: | Towle Brook, Wason Brook, Fordway Brook, Little River (Exeter) |
| Tributaries Right: | Wilson Brook, Little River (Brentwood), Great Brook |
The Exeter River is a 40.5adj=midNaNadj=mid[1] river located in Rockingham County in southeastern New Hampshire, United States.
It rises in the town of Chester, southeast of Manchester. It follows a winding course east and northeast to Exeter, where it becomes the Squamscott River, a tidal river leading north to Great Bay. There are falls and small dams at several locations along the river. A significant dam (Great Dam) that had long existed at the river's termination in Exeter was removed in the summer of 2016, restoring the river's flow to its natural state where it meets the Squamscott River.[2] [3]
The Exeter River drainage basin encompasses an area of . The upper of the river, from its headwaters to its confluence with Great Brook in Exeter, were designated into the NH Rivers Management and Protection Program in August 1995.