| East Branch Baker 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: | Grafton |
| Subdivision Type4: | Towns |
| Subdivision Name4: | Woodstock, Warren |
| Length: | 3.1miles |
| Source1: | Mount Moosilauke (Blue Ridge) |
| Source1 Location: | Woodstock |
| Source1 Coordinates: | 43.9867°N -71.8033°W |
| Source1 Elevation: | 2800feet |
| Mouth: | Baker River |
| Mouth Location: | Warren |
| Mouth Coordinates: | 43.9564°N -71.8331°W |
| Mouth Elevation: | 1300feet |
| Tributaries Left: | Blodgett Brook |
The East Branch of the Baker River is a 3.1adj=midNaNadj=mid[1] river in western New Hampshire in the United States. It is a tributary of the Baker River, part of the Pemigewasset River and Merrimack River watersheds.
The river rises on the southernmost slopes of Mount Moosilauke in the town of Woodstock. Flowing south, it quickly enters the town of Warren and crosses twice under Route 118 before joining the main stem of the Baker.