Clendening Lake is a reservoir located in Harrison County, Ohio, in the United States, formed by damming Brushy Fork, 0.5 miles (0.80 km) East of Tippecanoe.

It is known as the largest undeveloped lake in the state of Ohio, yet has on its shores: Boy Scout Summer Camp Fort Steuben Scout Reservation Clendening Marina in Freeport, Ohio and the YMCA's Camp Tippecanoe near the town of Tippecanoe, Ohio, along with a campground, playground, and picnic area.

The Ohio state record flathead catfish was caught in Clending Lake on July 28, 1979.

Clendening dam is 750 feet (230 m) long, located 0.6 miles (0.97 km) East of the community of Tippecanoe with a normal water pool level of 898 feet (274 m) above sea level.

This Harrison County, Ohio state location article is a stub.