Livingston County is a county located in the U.S. state of Kentucky. As of the 2020 census, the population was 8,888. Its county seat is Smithland and its largest community is Ledbetter. The county was established in 1798 from land taken from Christian County and is named for Robert R. Livingston, a member of the Committee of Five that drafted the U.S. Declaration of Independence. The county was strongly pro-Confederate during the American Civil War and many men volunteered for the Confederate Army. Livingston County is part of the Paducah, KY-IL Metropolitan Statistical Area. It is a prohibition or dry county with the exception of Grand Rivers which voted to allow alcohol sales in 2016.

Smithland is a home rule-class city in Livingston County, Kentucky, United States, at the confluence of the Ohio and Cumberland Rivers. The population was 301 at the 2010 census, a drop from 401 in 2000. It is the county seat of Livingston County.