Wartburg is a city in Morgan County, Tennessee, United States. The population was 890 at the 2000 census. It is the county seat of Morgan County.
Wartburg is located at 36°6′15″N 84°35′31″W / 36.10417°N 84.59194°W / 36.10417; -84.59194 (36.104244, -84.591817). The city is situated amidst the Crab Orchard Mountains, a sub-range of the Cumberland Mountains, near the eastern edge of the Cumberland Plateau. Bird Mountain dominates the area east of Wartburg, rising from its base at the edge of the city and stretching for some 10 miles (16 km) to its 3,142-foot (958 m) summit at Frozen Head State Park. The Emory River, its source near the summit of Bird, flows westwardly along the mountain's northern base, passing just north of Wartburg, and turning south before dropping off the plateau and emptying into the Watts Bar Lake impoundment of the Tennessee River. The Obed River flows eastwardly from Cumberland County through a scenic gorge before emptying into the Emory just west of Wartburg.
Wartburg is centered near the junction of U.S. Route 27, which connects the city to Kentucky to the north and Harriman and Interstate 40 to the south, and Tennessee State Route 62, which connects Wartburg to Oak Ridge to the east and Middle Tennessee to the west.