Claiborne County is a county located in the U.S. state of Tennessee. As of the 2020 census, the population was 32,043. Its county seat is Tazewell and its largest city is Harrogate.

Tazewell is a town in and the county seat of Claiborne County, Tennessee, United States. The population was 2,165 at the 2000 census, 2,218 at the 2010 census, and 2,348 at the 2020 census. The town is named for Tazewell, Virginia, which itself was named for Henry Tazewell (1753–1799), a U.S. senator from Virginia.