| South Branch Moose River | |
|---|---|
| Origin | Maine |
| Mouth | Moose River |
| Progression | Moose River – Moosehead Lake – Kennebec River |
| Basin countries | United States |
| Length | 11 miles (18 km) |
| Source elevation | 2,700 feet (820 m) |
| Mouth elevation | 1,400 feet (430 m) |
| Left tributaries | West Branch Moose River |
| Right tributaries | East Branch Moose River |
The South Branch Moose River is a tributary of the Moose River in Franklin County, Maine. Its source () on Caribou Mountain is about 1.5 miles (2 km) from the Canada – United States border, in Skinner (Maine Township 1, Range 7, WBKP). From there, the river winds generally north for 11.0 miles (17.7 km)[1] to its confluence with the main stream of the Moose River in Lowelltown (T1, R8, WBKP).