Coordinates: 35°42′25″N 83°22′59″W / 35.7069°N 83.3831°W
Greenbrier is a valley in the northern Great Smoky Mountains of Tennessee, located in the Southeastern United States. Now a recreational area, Greenbrier was once home to a string of Appalachian communities.
Greenbrier is situated along the Middle Fork of the Little Pigeon River, stretching from Porters Flat in the south to Emert's Cove in the north, at the present park boundary. The area also includes the Middle Fork's immediate watershed from the crest of Grapeyard Ridge to the west (opposite the Roaring Fork area) to Snag Mountain in the east. The area is sometimes called Big Greenbrier to distinguish it from Little Greenbrier, which is located between Wears Valley and Elkmont several miles to the west.
The ridges surrounding Greenbrier are among the highest in the Appalachian range. To the east is the Guyot massif, which rises to over 6,000 feet (1,829 m) for long stretches. To the west is the Le Conte massif, which culminates in a 6,593-foot (2,009 m) summit. The ridge immediately to the south connecting the two massifs, known as "the Sawteeth," consists of a series of jagged, steep cliffs, the most well-known of which spans the northern face of Charlies Bunion. Greenbrier Pinnacle, a 7-mile (11 km) ridge descending from the western flank of Old Black westward to the Middle Fork valley, nearly closes off Greenbrier Cove entirely. Over a dozen streams flow north from the crest of the Pinnacle, each of them cutting narrow hollows with traces of fertile bottomland.