Dunlap is a city in Sequatchie County, Tennessee, United States. The population was 4,173 at the 2000 census. It is the county seat of Sequatchie County.
Dunlap is part of the Chattanooga, TN–GA Metropolitan Statistical Area.
Dunlap is located at 35°22′38″N 85°23′18″W / 35.37722°N 85.38833°W / 35.37722; -85.38833 (35.377236, -85.388455). The city is located near the center of Sequatchie Valley, a long and narrow valley stretching like a 65-mile (105 km) gash in the Cumberland Plateau in southeastern Tennessee and northeastern Alabama. The plateau's western Sequatchie Valley escarpment, known locally as "Fredonia Mountain," rises over 1,000 feet (300 m) above the valley just west of Dunlap. The Sequatchie River forms the city's southeastern boundary.