| 1 | AUD | Audi Air, Inc. | Callsign: Audi Air, | USA | AVCODES |
| 2 | AUD | TransNorthern Airways, LLC. | Callsign: Genie, | USA | AVCODES |
| 3 | AUD | Audi Air, Inc. | | | ICAO1 |
| 4 | AUDC | AUDACIOUS INC | | | SCAC4 |
| 5 | AUDE | AUXILIAR DE TRANSPORTES MARITIMOS S | | | SCAC3 |
| 6 | AUDF | AUDUBON FORWARDING INC | | | SCAC3 |
| 7 | AUDG | AUSTIN DRAYING COMPANY | | | SCAC3 |
| 8 | AUDI | Audi | | D | TRAFFIC |
| 9 | AUDM | AUDUBON MOVING & STORAGE INC | | | SCAC3 |
| 10 | AUDM | AUDUBON MOVING & STORAGE LLC | | | SCAC4 |
| 11 | AUDN | AUDNEL AMERICA | | | SCAC3 |
| 12 | AUDN | AUDNEL AMERICA INTERNATIONAL INC. | | | SCAC4 |
| 13 | AUDO | AUDIO ASSOCIATES | | | SCAC4 |
| 14 | AUDP | AUTO DEALERS TRANSPORT | | | SCAC3 |
| 15 | AUDP | AUTOPARTES DE PRECISION DE SANTANA | | | SCAC4 |
| 16 | AUDS | AUTENS DELIVERY SERVICE INC | | | SCAC3 |
| 17 | AUDS | ASEO URBANO DE CHIHUAHUA SA DE CV | | | SCAC4 |
| 18 | AUDV | AUTO DELIVERY | | | SCAC3 |
| 19 | AUDY | AUDY TRUCKING LLC | | | SCAC4 |
