Harriman is a city in the U.S. state of Tennessee, primarily in Roane County, with a small extension into Morgan County. It is the principal city of and is included in the Harriman Micropolitan Statistical Area, which consists of Roane County and is a component of the Knoxville-Sevierville-La Follette, TN Combined Statistical Area. The population of Harriman was 6,744 at the 2000 census.