Emlyn is an unincorporated community and census-designated place in Whitley County, Kentucky, United States. As of the 2020 census, Emlyn had a population of 417. Emlyn has a post office with ZIP code 40730, which opened on May 29, 1902. U.S. Route 25W passes through the community.
According to the U.S. Census Bureau, the community has an area of ; of its area is land, and is water.