| Abbreviation | Definition |
|---|---|
| APN | Alpena, Michigan USA |
| APO | Apartado, Colombia |
| APP | Asapa, Papua New Guinea |
| APW | Apia, Samoa |
| AQA | Araraquara, Sao Paulo, Brazil |
| AQG | Anqing, Mainland China |
| AQI | Qaisumah, Saudi Arabia |
| AQJ | Aqaba, Jordan |
| AQP | Arequipa, Peru |
| ARC | Arctic Village Airport, Arctic Village, Alaska USA |
| ARH | Arkhangelsk, Russia |
| ARI | Arica, Chile |
| ARM | Armidale, New South Wales, Australia |
| ARN | Arlanda, Sweden |
| ARP | Aragip, Papua New, Guinea |
| ART | The IATA airport code for Watertown International Airport |
| ART | Watertown, New York USA |
| ARU | Aracatuba, Sao Paulo, Brazil |
| ARW | Arad, Romania |
| ARZ | N'zeto, Angola |