Clingmans Dome (or Clingman's Dome) is a mountain in the Great Smoky Mountains of Tennessee and North Carolina, in the southeastern United States. At an elevation of , it is the highest mountain in the Great Smoky Mountains National Park, the highest point in the state of Tennessee, and the highest point along the Appalachian Trail. It is also the third highest point in mainland Eastern North America, after the nearby Mount Mitchell () and Mount Craig ().