| 1 | AOA | Alcon Servicios Aereos, S.A. de C.V. | Callsign: Alcon, | MEX | AVCODES |
| 2 | AOA | Apollo Airlines, S.A. | IATA: PJ, Callsign: Apollo Air, Ceased operations during 1997. | GR | AVCODES |
| 3 | AOA | Apollo Airlines, S.A. | IATA: K6, Callsign: Apollo Air, IATA designator changed from PJ | GR | AVCODES |
| 4 | AOA | Air Ocean Airlines LLC | Callsign: Air Ocean, | UA | AVCODES |
| 5 | AOA | Alcon Servicios Aereos, S.A. de C.V. | | | ICAO1 |
| 6 | AOAB | A-ONE (A-1) ABC AUTO DRIVE AWAY | | | SCAC3 |
| 7 | AOAD | ASTRAL OCEANICA ARMADORA SA | | | SCAC3 |
| 8 | AOAD | ARROW WRECKER SERVICE INC | | | SCAC4 |
| 9 | AOAE | AUTO AIR SERVICES | | | SCAC3 |
| 10 | AOAE | AUSTROMAR OBCHODNI A DOPRAVNI SPOL | | | SCAC4 |
| 11 | AOAH | ASTRIDGE INTERNATIONAL | | | SCAC4 |
| 12 | AOAI | ARMSTRONG RELOCATION | | | SCAC4 |
| 13 | AOAJ | AMITE OIL CO LLC | | | SCAC4 |
| 14 | AOAK | ADEN OF AVON INC | | | SCAC4 |
| 15 | AOAL | A-ONE (A-1) CO OF CLARKSVILLE INC | | | SCAC4 |
| 16 | AOAM | A-ONE (A-1) ALLSTATE MOVERS INC | | | SCAC3 |
| 17 | AOAN | A-ONE (A-1) ADVENTURE TRAVEL INC | | | SCAC3 |
| 18 | AOAN | A ONE (A1) LOGISTICS LLC | | | SCAC4 |
| 19 | AOAO | A-ONE (A-1) ACE MOVING & STORAGE OF | | | SCAC3 |
| 20 | AOAO | AOL SOLUTIONS INC | | | SCAC4 |
| 21 | AOAP | AOA TRANSPORT | | | SCAC3 |
| 22 | AOAP | ARMSTRONG RELOCATION NASHVILLE TENN | | | SCAC4 |
| 23 | AOAQ | A-ONE (A-1) FAMILY TOWING INC | | | SCAC4 |
| 24 | AOAR | A-ONE (A-1) RELOCATION INCORPORATED | | | SCAC3 |
| 25 | AOAR | A-ONE (A-1) LOGISTICS INC | | | SCAC4 |
| 26 | AOAS | AI TRANSPORT CO | | | SCAC4 |
| 27 | AOAT | ACTION TRUCKING LLC | | | SCAC4 |
| 28 | AOAV | A-ONE (A-1) AUTO MOVERS | | | SCAC3 |
| 29 | AOAW | ALDERMAN OIL COMPANY | | | SCAC4 |
