| 1 | APY | APA International Air | IATA: 7P, Callsign: Apa International, Designator 7P recalled by IATA | USA | AVCODES |
| 2 | APY | APA Internacional | | | ICAO1 |
| 3 | APYA | A P Y S COLOR SUPPLY INC | | | SCAC4 |
| 4 | APYB | ALLIED PROPANE AND ALLIED ENERGY AN | | | SCAC4 |
| 5 | APYC | APC RECYCLING LLC | | | SCAC4 |
| 6 | APYE | ACTIVE PLAYGROUND EQUIPMENT | | | SCAC4 |
| 7 | APYF | ARAPEY FINANCIERA PANAMA S.A. | | | SCAC3 |
| 8 | APYG | AM PM DRAYAGE | | | SCAC3 |
| 9 | APYN | APPLIED PRECISION INC | | | SCAC4 |
| 10 | APYR | ASPHALT ROADS & MATERIALS CO INC | | | SCAC4 |
| 11 | APYR | Air Pyrénées | | F | TRAFFIC |
| 12 | APYS | APOCALYPSE INC | | | SCAC3 |
| 13 | APYX | American Polymer Corp. | added 10/1953; eliminated 1/1954 | | NAKINA |
| 14 | APYX | American Polymer Corp. | added 10/53 | | NRHS |
| 15 | APYX | AMERICAN POLYMER CORP. | | | PWRC |
