| 1 | AAD | Aero Aviation Centre Ltd. | Callsign: Sunrise, Ceased operations 1995 | CDN | AVCODES |
| 2 | AAD | Mann Air Ltd t/a Ambassador | Callsign: Ambassador, Ceased operations. | GB | AVCODES |
| 3 | AAD | Arrendamientos Aereos, S.A. | Callsign: Panabear, | PA | AVCODES |
| 4 | AAD | Aero Aviation Centre Ltd. | | | ICAO1 |
| 5 | AADA | AADA SYSTEMS INC | | | SCAC3 |
| 6 | AADC | A & A DELIVERY SERVICE | | | SCAC3 |
| 7 | AADC | AALSTEC DATA CORPORATION | | | SCAC4 |
| 8 | AADD | AATCO | | | SCAC4 |
| 9 | AADE | A & D EXPRESS INC | | | SCAC3 |
| 10 | AADE | A & D EXPRESS INC | | | SCAC4 |
| 11 | AADF | A & D FREIGHT LINES INC | | | SCAC3 |
| 12 | AADG | AAA DELIVERY SYSTEMS, INC | | | SCAC3 |
| 13 | AADH | A & D HITCHCOCK TRUCKING INC | | | SCAC3 |
| 14 | AADH | AUTOTRANSPORTES ALBA | | | SCAC4 |
| 15 | AADI | A ADVANCED MAIL DELIVERY SERVICE | | | SCAC3 |
| 16 | AADI | AUTO ANODICS INC | | | SCAC4 |
| 17 | AADJ | AADJ FORWARDERS INC | | | SCAC3 |
| 18 | AADK | A & D TRUCKING | | | SCAC3 |
| 19 | AADK | A & D TRUCKING LTD | | | SCAC4 |
| 20 | AADL | AAA DELIVERY SYSTEMS INC | | | SCAC3 |
| 21 | AADL | AGENCIA ADUANAL S C | | | SCAC4 |
| 22 | AADM | A ADVANCE WORLDWIDE MOVING COMPANY | | | SCAC3 |
| 23 | AADN | AAA DISTRIBUTION SYSTEMS INC | | | SCAC3 |
| 24 | AADN | AGENCIA ADUANERA DE AMERICA S C | | | SCAC4 |
| 25 | AADO | A A A DELIVERY SERVICE | | | SCAC3 |
| 26 | AADP | A & D PACKING CORP | | | SCAC3 |
| 27 | AADR | AUTOTRANSPORTES A D R | | | SCAC4 |
| 28 | AADS | ALI ARC INDUSTRIES LP | | | SCAC4 |
| 29 | AADT | A & D TRUCKING CO | | | SCAC3 |
| 30 | AADU | ACMH AEROSPACE & DEFENCE | | | SCAC4 |
| 31 | AADV | ALL AMERICAN DELIVERY SERVICE | | | SCAC3 |
| 32 | AADW | A A D F WAREHOUSE CORP | | | SCAC4 |
| 33 | AADX | Airco Alloys and Carbide, a Division of Airco, Inc. | added 7/1972; eliminated 7/1974 | | NAKINA |
| 34 | AADX | Airco Alloys and Carbide, a Division of Air Reduction Co. Inc. | added 7/1968; 4/1970; eliminated 7/1972 | | NAKINA |
| 35 | AADX | Airco Alloys and Carbide, a Division of Air Reduction Co. Inc. | added 7/68; 4/70 | | NRHS |
| 36 | AADX | Airco Alloys and Carbide, a Division of Airco, Inc. | eliminated 7/74 | | NRHS |
| 37 | AADX | AIRCO ALLOYS & CARBIDE | | | PWRC |
| 38 | AADX | Airco Alloys and Carbide | | | RSRV |
| 39 | AADY | AARON DRIVEAWAY-TRUCKAWAY CO INC | | | SCAC3 |