Hickman County is a county located in the U.S. state of Kentucky. As of the 2020 census, the population was 4,521, making it the third-least populous county in Kentucky. Its county seat is Clinton. The county was formed in 1821. It is the least densely populated county in the state and is a prohibition or dry county.

Paschal Hickman was an American military officer who was killed in the Massacre of the River Raisin, an important event in the War of 1812. Hickman County, Kentucky is named for him.