The Shade River is a tributary of the Ohio River in southeastern Ohio in the United States. Via the Ohio River, it is part of the watershed of the Mississippi River, draining an area of 221 square miles (570 km2) on the unglaciated portion of the Allegheny Plateau. The Shade River is 17.4 miles (28.0 km) long, or 38.2 miles (61.5 km) including its west branch.The Shade River flows predominantly as three streams, its east, middle, and west branches.