St. Johns Industrial Air Park (IATA: SJN, ICAO: KSJN, FAA LID: SJN) is a city-owned public-use airport located 1.15 miles (1.00 nmi; 1.85 km) north of the central business district of St. Johns, a city in Apache County, Arizona, United States. The airport is included in the FAA's National Plan of Integrated Airport Systems for 2009–2013, which categorizes it as a general aviation facility. The NPIAS report for 2015–2019 classified the Air Park again as General Aviation, in the "Basic" asset category, for airports with the lowest levels of activity.