Franklin County Airport (IATA: UOS, ICAO: KUOS, FAA LID: UOS) is a public airport located one mile (2 km) east of the central business district of Sewanee, a census-designated place in Franklin County, Tennessee, United States. It is owned by Franklin County.

It is a general aviation airport located atop the Cumberland Plateau. The location is commonly referred to as Monteagle Mountain since it is near one of the most notoriously hazardous stretches of Interstate highway in the United States where Interstate 24 crosses the plateau. The ICAO designation "KUOS" resulted from its proximity to the University of the South. Although the airport is named "Franklin County", it is referred to as "Sewanee" over the radio on Unicom 122.8.