Middleton Field (ICAO: KGZH, FAA LID: GZH, formerly 39J) is a public-use airport located 5 nautical miles (9.3 km; 5.8 mi) west of the central business district of Evergreen, a city in Conecuh County, Alabama, United States. According to the FAA's National Plan of Integrated Airport Systems for 2009–2013, it is categorized as a general aviation facility.