| South Branch Moose River | |
| Mouth Coordinates: | 45.5257°N -70.5896°W |
| Subdivision Type1: | Country |
| Tributaries Right: | East Branch Moose River |
The South Branch Moose River is a tributary of the Moose River in Franklin County, Maine. Its source (45.4393°N -70.6039°W) on Caribou Mountain is about 1.5miles from the Canada–United States border, in Skinner (Maine Township 1, Range 7, WBKP). From there, the river winds generally north for [1] to its confluence with the main stream of the Moose River in Lowelltown (T1, R8, WBKP).