Byrdstown is a town in Pickett County, Tennessee, United States. The population was 903 at the 2000 census. It is the county seat of Pickett County.
Byrdstown is located at 36°34′21″N 85°8′14″W / 36.5725°N 85.13722°W / 36.5725; -85.13722 (36.572585, -85.137088). The town is situated on the Highland Rim a few miles east of Dale Hollow Lake. Byrdstown is traversed by Tennessee State Route 325, which travels east-to-west across the northern part of the county. Recently, the town has grown westward to TN-325's junction with Tennessee State Route 111.
According to the United States Census Bureau, the town has a total area of 1.5 square miles (4.0 km²), all of it land. The Byrdstown area is drained by the Wolf River.