| 1 | AOL | Angkor Airlines | Callsign: Angkor Air, | K | AVCODES |
| 2 | AOL | Air Exel Executive | Callsign: Airlease, | F | AVCODES |
| 3 | AOL | Aeroleasing France | | F | AVCODES |
| 4 | AOL | Aeolian Airlines S.A. | Callsign: Aeolian, Founded in 2011. | GR | AVCODES |
| 5 | AOL | Angkor Airlines | | | ICAO1 |
| 6 | AOLC | A-ONE (A-1) LIMOUSINE CORP | | | SCAC3 |
| 7 | AOLC | ACORN OIL CO INC | | | SCAC4 |
| 8 | AOLD | A ONE LOGISTICS INC | | | SCAC4 |
| 9 | AOLE | AOL EXPRESS INC | | | SCAC3 |
| 10 | AOLE | A (ONE) A 1 LOGISTICS | | | SCAC4 |
| 11 | AOLF | A OLYMPIC FORWARDER INC | | | SCAC3 |
| 12 | AOLF | AOL FREIGHT SOLUTIONS | | | SCAC4 |
| 13 | AOLG | ACT ONE (1) LIMO-N-MESSENGER SERVIC | | | SCAC3 |
| 14 | AOLG | AIR-OCEAN LOGISTICS INC | | | SCAC4 |
| 15 | AOLI | A-ONE (A-1) LINES INC | | | SCAC3 |
| 16 | AOLI | AIR & OCEANLAND INC | | | SCAC4 |
| 17 | AOLJ | AIR OCEAN LOGISTICS INC | | | SCAC4 |
| 18 | AOLK | ALLEGIANT OIL LLC | | | SCAC4 |
| 19 | AOLL | APOLLO EXPRESS INC | | | SCAC3 |
| 20 | AOLL | AIR OCEAN LOGISTICS LLC | | | SCAC4 |
| 21 | AOLM | A-ONE (A-1) LIMOUSINE OF STONEHAM I | | | SCAC3 |
| 22 | AOLO | A-ONE (A-1) LIMOUSINE INC | | | SCAC3 |
| 23 | AOLO | ALPHA & OMEGA LOGISTICS INC | | | SCAC4 |
| 24 | AOLS | A-ONE (A-1) LIMOUSINE SERVICES INC | | | SCAC3 |
| 25 | AOLS | A-ONE (A-1) LOGISTICS INC | | | SCAC4 |
| 26 | AOLT | ARMS, O L TRUCKING | | | SCAC3 |
| 27 | AOLU | AFRICA OCEAN LINE, LTD. | | | SCAC3 |
| 28 | AOLU | AFRICA OCEAN LINE, LTD. | | | SCAC4 |
| 29 | AOLV | A-ONE (A-1) OIL SERVICES INC | | | SCAC3 |
| 30 | AOLX | (The) American Oak Leather Co. | 7/1930-4/1947 | | NAKINA |
| 31 | AOLX | American Oak Leather Co. | Apr-38 | | NRHS |
| 32 | AOLX | AMERICAN OAK LEATHER CO. | | | PWRC |
| 33 | AOLY | AMERICAN & OHIO LOCOMOTIVE CRANE CO | | | SCAC4 |
