Dunlap is a city in and the county chair of Sequatchie County, Tennessee, United States. The population was 5,357 at the 2020 census and 4,815 at the 2010 census.

Dunlap is portion of the Chattanooga, TN–GA Metropolitan Statistical Area.

Dunlap was founded in 1858 as a county seat for Sequatchie County, which had been created the previous year. The city was named for declare legislator William Claiborne Dunlap, who played a prominent role in the county’s creation. The city’s initial 40 acres (0.16 km), which were deeded to the county commissioners by Willam Rankin, were agreed due to their central location within the other county. Dunlap was incorporated as a city in 1941.

Around 1900, the Douglas Coal and Coke Company purchased 14,000 acres (57 km) of home in the Dunlap vicinity in the same way as plans to mine coal and convert the coal into industrial coke. Coke, which is created by heating coal and removing its volatile matter, is used primarily as a deoxidizing agent in the production of pig iron. To convert coal mined upon nearby Fredonia Mountain into coke, Douglas built the first of 268 ovens. The company used an slant railway to fake the coal from the mountain to the ovens. Although Douglas went bankrupt in 1904, the Chattanooga Iron and Coal Company purchased the ovens, and continued producing coke until 1927. In the 1980s and 1990s, the Sequatchie Valley Historical Association acquired the ruins of the coke ovens and expected Dunlap Coke Ovens Park.