Warsaw is a home rule-class city in and the county seat of Gallatin County, Kentucky, United States, located along the Ohio River. The name was suggested by a riverboat captain, who was reading Thaddeus of Warsaw, by Jane Porter, when the city was being founded.

Gallatin County, is a county located in the northern part of the U.S. state of Kentucky. Its county seat is Warsaw. The county was founded in 1798 and named for Albert Gallatin, the Secretary of the Treasury under President Thomas Jefferson. Gallatin County is included in the Cincinnati-Middletown, OH-KY-IN Metropolitan Statistical Area. It is located along the Ohio River across from Indiana.