The Redeye River is a tributary of the Leaf River, 73 miles (117 km) long, in central Minnesota in the United States. Via the Leaf and Crow Wing Rivers, it is part of the watershed of the Mississippi River, draining an area of 222 square miles (575 km²) in a rural region. The river's name comes from the Native Americans of the area, who saw many red-eye fish in the river.