Coordinates: The Willis River is a 61.8-mile-long (99.5 km) tributary of the James River in central Virginia in the United States. Via the James River, it is part of the watershed of Chesapeake Bay.
The Willis River rises in southern Buckingham County and initially flows eastwardly into Cumberland County, where it turns north-northeastwardly for the remainder of its course. It flows into the James River in northern Cumberland County, about 6 miles (10 km) southeast of Columbia.
- U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed April 1, 2011
- U.S. Geological Survey Geographic Names Information System: Willis River