Pine Ridge Airport (IATA: XPR, ICAO: KIEN, FAA LID: IEN) is a public use airport located two nautical miles (3.7 km) east of the central business district of Pine Ridge, in Oglala Lakota County, South Dakota, United States. The airport is owned by the Oglala Sioux Tribe, which has its tribal headquarters at Pine Ridge on the Pine Ridge Indian Reservation. According to the FAA's National Plan of Integrated Airport Systems for 2009–2013, it is categorized as a general aviation facility.