Alpha is an unincorporated community in Clinton County, Kentucky, United States. It lies along Route 90 northeast of the city of Albany, the county seat of Clinton County. Its elevation is 1,014 feet (309 m), and it is located at 36°45′44″N 85°0′37″W / 36.76222°N 85.01028°W / 36.76222; -85.01028Coordinates: 36°45′44″N 85°0′37″W / 36.76222°N 85.01028°W / 36.76222; -85.01028. Although it is unincorporated, it has a post office, with the ZIP code of 42603.
The name comes from Alpha E. Davis, the community's second postmaster.