Monteagle is a town in Franklin, Grundy, and Marion counties in the U.S. state of Tennessee, in the Cumberland Plateau region of the southeastern part of the state. The population was 1,238 at the 2000 census – 804 of the town's 1,238 residents (64.9%) lived in Grundy County, 428 (34.6%) in Marion County, and 6 (0.5%) in Franklin County. The Marion County portion of Monteagle is part of the Chattanooga–GA Metropolitan Statistical Area, while the Franklin County portion is part of the Tullahoma, TN Micropolitan Statistical Area.
Monteagle is most famous for the treacherous stretch of Interstate 24 that passes through the town. It is here that the highway passes over what is colloquially referred to as "The Monteagle" or "Monteagle Mountain", a section of the southern Cumberland Plateau which is a major landmark on the road between Chattanooga and Nashville. The interstate regularly shuts down in inclement weather, routing traffic onto U.S. Route 41. In the Jerry Reed song "The Legend", which is the opening track in the film Smokey and the Bandit, Reed tells the story of the Bandit miraculously surviving brake failure on the "Monteagle Grade." There is also a song called "Monteagle Mountain" by Johnny Cash on the album Boom Chicka Boom.