Rockwood is a city in Roane County, Tennessee, United States. Its population was 5,562 at the time of the 2010 census. It is included in the Harriman, Tennessee Micropolitan Statistical Area.
Rockwood is located at 35°52′9″N 84°40′31″W (35.869147, -84.675176). The city is situated at the base of the eastern escarpment of the Cumberland Plateau, known locally as Walden Ridge. The boundary between the Eastern Time Zone and Central Time Zone runs along Rockwood's western boundary. The Watts Bar Lake impoundment of the Tennessee River provides much of Rockwood's southern boundary.
Rockwood is situated around a series of roads which intersect U.S. Route 70 between its junction with State Route 29 in the northeast and State Route 27 to the southwest. In recent years, the town has expanded toward Interstate 40 to the northeast. Rockwood is a familiar site to travelers who frequent I-40 between Knoxville and Nashville, as dramatic views of Rockwood and the Tennessee Valley beyond line the interstate just before it peaks at the edge of the Cumberland Plateau.