Lawrence County is a county located in the U.S. state of Tennessee. As of the 2020 census, the population was 44,159. Its county seat and largest city is Lawrenceburg. Lawrence County comprises the Lawrenceburg, TN Micropolitan Statistical Area, which is also included in the Nashville-Davidson-Murfreesboro, TN Combined Statistical Area.

The city of Lawrenceburg is the county seat of Lawrence County, Tennessee, United States, The largest city on the state's southern border between Chattanooga and Memphis, it lies on the banks of Shoal Creek. The population was 11,633 at the 2020 United States Census. The city is named after War of 1812 American Navy officer James Lawrence.