Elizabethtown Regional Airport (IATA: EKX, ICAO: KEKX, FAA LID: EKX), also known as Addington Field, is a public use airport located four nautical miles (7 km) west of the central business district of Elizabethtown, a city in Hardin County, Kentucky, United States. The airport is owned by the Elizabethtown Airport Board. It is used for general aviation, but current exploration of commercial aviation is underway.

Addington Field opened in 1982. In February 2007, the airport board changed the name to Addington Field / Elizabethtown Regional Airport. The new name appears on airport's website and in its logo, but the Federal Aviation Administration still shows the name as Addington Field (as per the airport's master record effective July 2009).

The airport briefly saw commercial airline service in the late 1980s. Delta Connection, operated by Comair on behalf of Delta Air Lines, provided commuter flights to Cincinnati for about four months in mid-1987. Piedmont Commuter, operated by Jetstream International on behalf of Piedmont Airlines operated commuter flights to Dayton from mid-1987 through early 1988. Cincinnati and Dayton were both large hub cities for Delta and Piedmont at the time.