| 1 | AOR | Afro International Ent. Limited | Callsign: Inter-Afro, | WAN | AVCODES |
| 2 | AOR | Afro International Ent. Limited | | | ICAO1 |
| 3 | AOR | The Aliquippa & Ohio River R.R. Co. | 7/2005 | | NAKINA |
| 4 | AOR | Ohio Central Rd. System | added 4/2003 | | NAKINA |
| 5 | AOR | The Aliquippa & Ohio River R.R. Co. | added 1/2003; eliminated 4/2003 | | NAKINA |
| 6 | AOR | ALIQUIPPA & OHIO RIVER RAILROAD (OHIO CENTRAL RAILROAD) | | | PWRC |
| 7 | AOR | Aliquippa and Ohio River Railroad | | | RSRV |
| 8 | AOR | ALIQUIPPA & OHIO RIVER RAILROAD COM | | | SCAC4 |
| 9 | AORA | ANONIMA RAVENNATE ARMAMENTO SPA | | | SCAC3 |
| 10 | AORB | AUTOTRANSPORTES ORBAL | | | SCAC4 |
| 11 | AORC | ARCO RAIL&CONTAINER SERVICE, INC | | | SCAC3 |
| 12 | AORC | ARCO RAIL & CONTAINER SERVICE INC | | | SCAC4 |
| 13 | AORD | ACCORD TRANSPORTATION INC | | | SCAC4 |
| 14 | AORF | AMERICAN ORIENT FORWARDING COMPANY | | | SCAC3 |
| 15 | AORF | AMERICAN ORIENT FORWARDING COMPANY | | | SCAC4 |
| 16 | AORI | ARMOR INC | | | SCAC3 |
| 17 | AORI | ARMOR INC | | | SCAC4 |
| 18 | AORL | ADCO LOGISTICS | | | SCAC4 |
| 19 | AORM | ANCHOR MOVING | | | SCAC3 |
| 20 | AORN | ACORN TRUCKING INC | | | SCAC3 |
| 21 | AORR | AIRPORT TRANSIT INC | | | SCAC3 |
| 22 | AORS | A-ONE (A-1) RELOCATION SERVICES INC | | | SCAC3 |
| 23 | AORT | ATOR, ROY TRUCK SERVICES | | | SCAC3 |
| 24 | AORU | OEG OFFSHORE GROUP LIMITED | | SGP | BIC |
| 25 | AORX | Athens Food & Refining Co., Inc. | 1/1950-7/1954 | | NAKINA |
| 26 | AORX | Athens Fuel & Refining Co., Inc. | Jan-52 | | NRHS |
| 27 | AORX | ATHENS FOOD & REFINING CO., INC. | | | PWRC |
