Ludlow is a home rule-class city in Kenton County, Kentucky, United States, along the Ohio River. The population was 4,385 at the 2020 census. It is a suburb of the Cincinnati metropolitan area. It received its greatest period of early growth as a rail station.

Kenton County is a county located in the northern part of the Commonwealth of Kentucky. As of the 2020 census, the population was 169,064, making it the third most populous county in Kentucky. Its county seats are Covington and Independence. It was, until November 24, 2010, the only county in Kentucky to have two legally recognized county seats. The county was formed in 1840 and is named for Simon Kenton, a frontiersman notable in the early history of the state.