The West Branch Piscataquis River is a 22-mile-long (35 km)[1] tributary of the Piscataquis River in Piscataquis County, Maine.

Its source (45°22′59″N 69°45′05″W / 45.3831°N 69.7515°W / 45.3831; -69.7515 (West Branch Piscataquis River source)) is in East Moxie, Somerset County (Maine Township 2, Range 4, BKP EKR).

The river runs about 6 miles (10 km) east, then 11 miles (18 km) south, then 5 miles (8 km) east to its confluence with the East Branch Piscataquis River in Blanchard to form the Piscataquis.

The Appalachian Trail crosses the West Branch just below Bald Mountain Stream, and runs along the north bank of the river for about 4 miles (6 km) in Blanchard, to the joining with the East Branch.

This article related to a river in Maine is a stub.