| Rocky Branch | |
| 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: | Counties |
| Subdivision Name3: | Coos, Carroll |
| Subdivision Type4: | Towns and townships |
| Subdivision Name4: | Cutts Grant, Sargents Purchase, Jackson, Bartlett |
| Length: | 13.1miles |
| Source1: | Presidential Range Dry River Wilderness |
| Source1 Location: | Cutts Grant |
| Source1 Coordinates: | 44.2336°N -71.2958°W |
| Source1 Elevation: | 3910feet |
| Mouth: | Saco River |
| Mouth Location: | Bartlett |
| Mouth Coordinates: | 44.1025°N -71.1972°W |
| Mouth Elevation: | 550feet |
| Tributaries Right: | Upper Stairs Brook, Lower Stairs Brook |
The Rocky Branch is a 13.1adj=midNaNadj=mid[1] river in the White Mountains of New Hampshire in the United States. It is a tributary of the Saco River, which flows to the Atlantic Ocean in Maine.
The Rocky Branch rises in the Presidential Range Dry River Wilderness Area of the White Mountain National Forest on the southernmost slopes of Mount Washington. The river drops rapidly to the south through a valley between Montalban Ridge (with the peaks of Mount Isolation and Stairs Mountain) to the west and the lower Rocky Branch Ridge to the east. Turning more to the southeast, the river leaves the national forest and enters the town of Bartlett, New Hampshire, where it joins the Saco River after passing under U.S. Route 302.
The Rocky Branch Railroad supported a logging operation in the valley from 1908 to 1913. The rails were removed in 1914 after the area was ravaged by wildfires.[2]