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is a city in and the county seat of Roane County, Tennessee, United States, and is adjacent to Watts Bar Lake. Kingston, with a population of 5,264 at the 2000 United States census, is included in the Harriman, Tennessee Micropolitan Statistical Area.
Kingston is located at . The town is situated at the confluence of the Clinch River and the Tennessee River. This confluence is now part of Watts Bar Lake, a reservoir created by the impoundment of the Tennessee by Watts Bar Dam several miles to the southwest.
Kingston is centered around the junction of U.S. Route 70, which connects Kingston with Knoxville to the east and Nashville to the west, and State Route 58, which connects Kingston with Oak Ridge to the northeast and Chattanooga to the south. Interstate 40 passes through Kingston, running roughly parallel to US 70.
According to the United States Census Bureau, the city has a total area of 7.3 square miles (18.9 km²), of which, 6.6 square miles (17.0 km²) of it is land and 0.8 square miles (2.0 km²) of it (10.40%) is water.