The West Branch of the Peabody River is a 5.8 mile long (9.3 km) river in the White Mountains of New Hampshire in the United States. It is a tributary of the Peabody River, which flows into the Androscoggin River, which in turn flows south and east into Maine, joining the Kennebec River near the Atlantic Ocean. The West Branch of the Peabody is within the Great Gulf Wilderness of the White Mountain National Forest for most of its length.