Franklin Flying Field (FAA LID: 3FK) is a privately owned, public use airport located three nautical miles (6 km) south of the central business district of Franklin, a city in Johnson County, Indiana, United States.

[1] Franklin Flying Field covers an area of 129 acres (52 ha) at an elevation of 740 feet (226 m) above mean sea level.

It has one runway designated 3/21 with an asphalt surface measuring 2,400 by 35 feet (732 x 11 m).

[1] There are 43 aircraft based at this airport: 95.3% single-engine, 2.3% multi-engine, and 2.3% helicopter.

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