Martin County is a county located in the U.S. state of Kentucky. As of the 2020 census, the population was 11,287. Its county seat is Inez. The county was founded in 1870 and is named for Congressman John Preston Martin. Warfield, Kentucky, is the only non-dry city in the county.

Inez is a home rule-class city in and the county seat of Martin County, Kentucky, United States. The population was 546 at the 2020 census.