Marion County Airport (IATA: APT, ICAO: KAPT, FAA LID: APT), also known as Brown Field, is a county-owned, public-use airport located four nautical miles (7 km) southeast of the central business district of Jasper, a town in Marion County, Tennessee, United States.

[1] Marion County Airport covers an area of 86 acres (35 ha) at an elevation of 641 feet (195 m) above mean sea level.

It has one runway designated 4/22 with an asphalt surface measuring 3,500 by 75 feet (1,067 x 23 m).

[1] For the 12-month period ending June 25, 2009, the airport had 4,480 aircraft operations, an average of 12 per day: 98% general aviation and 2% military.

At that time there were 12 aircraft based at this airport: 92% single-engine and 8% helicopter.