Balls Fork is a stream that is mainly in Knott County, Kentucky in the United States.[1] It a fork of the Troublesome Creek tributary of the North Fork Kentucky River that it joins over the county line in Perry County.[1] It is 19.5 miles (31.4 km) long.[2]
It is not known where its name comes from.[2] Unlike many other locations in Kentucky, there are no local families recorded with the surname Balls for whom it could have been named.[2]