Giles County is a county located in the U.S. state of Tennessee. As of the 2020 census, its population was 30,346. Its county seat is Pulaski.

Pulaski is a city in and the county seat of Giles County, which is located on the central-southern border of Tennessee, United States. The population was 8,397 at the 2020 census. It was named after Casimir Pulaski, a noted Polish-born general on the Patriot side in the American Revolutionary War.