| 1 | AQ | Aloha Airlines, Inc. | ICAO: AAH, Callsign: Aloha, IATA Prefix: 327, Ceased Operations on 31 March 2008. IATA designator changed from TS | USA | AVCODES |
| 2 | AQ | Air Anglia Ltd. | Callsign: Anglia, Merged into Air UK | GB | AVCODES |
| 3 | AQ | Southern Air Charters Ltd. | Callsign: Southair, | GB | AVCODES |
| 4 | AQ | MAP Management and Planning GmbH | ICAO: MPJ, Callsign: Mapjet, Designator AQ recalled by IATA | A | AVCODES |
| 5 | AQ | Nine Air Co., Ltd. t/a 9air.com | ICAO: JYH, Callsign: Trans Jade, IATA Prefix: 902, | PRC | AVCODES |
| 6 | AQA | Aeroatlas, S.A. | Callsign: ATCO, | CO | AVCODES |
| 7 | AQA | Aeroatlas, S.A. | | | ICAO1 |
| 8 | AQAA | AAA TRANSPORT SERVICES INC | | | SCAC4 |
| 9 | AQAB | AQUASSURE ACCESSIBLE BATHS | | | SCAC4 |
| 10 | AQAF | ATLANTIC AFRICA LINE | | | SCAC3 |
| 11 | AQAF | ATLANTIC AFRICA LINE | | | SCAC4 |
| 12 | AQAN | AQUANEERS CORP | | | SCAC3 |
| 13 | AQAN | ARCTRANS LLC | | | SCAC4 |
| 14 | AQAU | AQUA CONTAINER LINES LTD | | | SCAC4 |
| 15 | AQAV | AQUAVITA INTERNATIONAL SA | | | SCAC4 |
| 16 | AQB | Aqualata Air S.L. (Aqua Air) | Callsign: Aquair, | E | AVCODES |
| 17 | AQBC | ABC CHARTERS INC | | | SCAC3 |
| 18 | AQBG | ARCTIC BAY SHIPPING LIMITED | | | SCAC4 |
| 19 | AQBH | ARAWAK BAHAMAS LTD. | | | SCAC3 |
| 20 | AQBH | ANTIQUITES MARCEL BOLDUC INC | | | SCAC4 |
| 21 | AQBK | ABC BROKERAGE COMPANY | | | SCAC4 |
| 22 | AQBS | ABSOLUTE TRANSPORTATION SERVICES IN | | | SCAC4 |
| 23 | AQC | Alquiladora de Casas, S.A. de C.V. | Callsign: Alquiladora, | MEX | AVCODES |
| 24 | AQCA | APOLLO CONTAINER LINES | | | SCAC3 |
| 25 | AQCA | ACOSTA, MANUEL | | | SCAC4 |
| 26 | AQCC | AMERICAN CARRIERS CO | | | SCAC3 |
| 27 | AQCC | AMERICAN COURIER COMPANY INC | | | SCAC4 |
| 28 | AQCD | A & C INCORPORATED | | | SCAC4 |
| 29 | AQCE | AMERICAN COURIER EXPRESS INC | | | SCAC3 |
| 30 | AQCE | AMERICAN TRANSPORTATION OF CADES IN | | | SCAC4 |
| 31 | AQCF | ATLANTIC COASTAL FUELS INC | | | SCAC4 |
| 32 | AQCH | AQUACHART SIA | | | SCAC4 |
| 33 | AQCI | ASTRAL CARRIER INC | | | SCAC3 |
| 34 | AQCI | ASTRAL CARRIER INC | | | SCAC4 |
| 35 | AQCK | A&C TRUCKING | | | SCAC3 |
| 36 | AQCK | ACTION TANKER CORPORATION | | | SCAC4 |
| 37 | AQCL | ARTIC COASTAL TRANSPORTS INC | | | SCAC3 |
| 38 | AQCN | AMERICAN CONSOLIDATED TRANSPORTATION, INC | | | SCAC3 |
| 39 | AQCN | AMERICAN CONSOLIDATED TRANSPORTATIO | | | SCAC4 |
| 40 | AQCO | ANCON COMPANIA ARMADORA S A | | | SCAC3 |
| 41 | AQCR | ARAWAK CARIBBEAN LINE LTD. | | | SCAC3 |
| 42 | AQCR | ALLECAP TRANSPORTATION INC | | | SCAC4 |
| 43 | AQCS | A C TRAILERS INC | | | SCAC3 |
| 44 | AQCS | AQUACOUSTIC REMOTE TECHNOLOGIES INC | | | SCAC4 |
| 45 | AQCT | A C T | | | SCAC3 |
| 46 | AQCT | ACCU-TRANS INC | | | SCAC4 |
| 47 | AQCV | ACTIVITY S A | | | SCAC3 |
| 48 | AQCX | Aqua-Chem, Inc., Cleaver Brooks Division | added 1/1969; 4/1970-1/1980; 1/1994-7/2005 (not listed) | | NAKINA |
| 49 | AQCX | Aqua-Chem, Inc., Cleaver Brooks Division | added 1/69; 4/70-7/2000 | | NRHS |
| 50 | AQCX | AQUA-CHEM INC., CLEVER BROOKS DIV | | | PWRC |
| 51 | AQCX | Aqua-Chem (Celaver Brooks Division) | | | RSRV |
| 52 | AQCX | AQUA-CHEM INC., CLEVER BROOKS DIV | | | SCAC4 |
| 53 | AQCY | ACTIVE CLAY INC | | | SCAC4 |
| 54 | AQDB | ADAMS, BURT | | | SCAC4 |
| 55 | AQDG | AQUADELIGHT (1983) | | | SCAC4 |
| 56 | AQDI | AQUATRANS DISTRIBUTORS INC | | | SCAC4 |
| 57 | AQDS | A & D TRANSPORTATION INC | | | SCAC4 |
| 58 | AQDV | AIRPORT DELIVERY SERVICE | | | SCAC3 |
| 59 | AQDY | A QUICK DELIVERY | | | SCAC4 |
| 60 | AQEM | ALLSEAS MARINE S A | | | SCAC4 |
| 61 | AQFF | AQUARIUS FAST FREIGHT | | | SCAC3 |
| 62 | AQFH | AMERICAN FREIGHT LINE | | | SCAC3 |
| 63 | AQFH | AMERICAN FREIGHT LINE | | | SCAC4 |
| 64 | AQFN | ALBERTVILLE QUALITY FOODS INC | | | SCAC4 |
| 65 | AQFR | AA FORWARDING INC TAIPEI TAIWAN | | | SCAC3 |
| 66 | AQGC | ATLANTIC LOGISTICS INC | | | SCAC4 |
| 67 | AQGE | AMERICAN EAGLE LOGISTICS INC | | | SCAC4 |
| 68 | AQGT | AMERICAN CARGO TRANSPORT INC. | | | SCAC3 |
| 69 | AQHS | ALTAMAR SHIPPING SERVICES INC | | | SCAC4 |
| 70 | AQIE | ALISONS RELOCATIONS INC | | | SCAC4 |
| 71 | AQIH | AUTHENTIC TRANSPORT INC | | | SCAC4 |
| 72 | AQIR | AIR CAPITOL INC | | | SCAC4 |
| 73 | AQIS | AMERICAN INTERMODAL SYSTEMS | | | SCAC3 |
| 74 | AQIS | AMERICAN INTERMODAL SYSTEMS | | | SCAC4 |
| 75 | AQIT | ALLIED TRANSPORT INC | | | SCAC4 |
| 76 | AQIU | AQUAM INSULA PTE LTD | | FJI | BIC |
| 77 | AQKC | AQUA TANKER CORPORATION | | | SCAC4 |
| 78 | AQKO | AQUARIUS TANKER CORPORATION | | | SCAC4 |
| 79 | AQKY | AQUATIC TRUCKING CO | | | SCAC4 |
| 80 | AQL | Aquila Air Ltd. | Callsign: Aquila, | CDN | AVCODES |
| 81 | AQL | Comair Flight Services (Pty) Ltd. | Callsign: Aquila, | ZA | AVCODES |
| 82 | AQL | Aquila Air Ltd. | | | ICAO1 |
| 83 | AQLA | ALABAMA CARRIERS INC | | | SCAC4 |
| 84 | AQLB | ALBATROSS SHIPPING INC | | | SCAC4 |
| 85 | AQLC | ATLANTIC COAST CARRIERS INC | | | SCAC4 |
| 86 | AQLD | ALD INC | | | SCAC4 |
| 87 | AQLE | ALLSTATES LOGISTICS INC | | | SCAC4 |
| 88 | AQLG | APECS LOGISTICS INC | | | SCAC4 |
| 89 | AQLI | AMERICAN LIFT-GATE EXPRESS | | | SCAC4 |
| 90 | AQLK | AMHERST QUARRIES (1969) LTD | | | SCAC4 |
| 91 | AQLL | ALLIANCE EXPRESS LLC | | | SCAC4 |
| 92 | AQLN | AQUALINE INTERNATIONAL INC | | | SCAC4 |
| 93 | AQLO | ATL TRANSPORTATION LLC | | | SCAC4 |
| 94 | AQLQ | AQUARIUS LINES | | | SCAC3 |
| 95 | AQLR | ALL STAR TRANSPORTATION | | | SCAC4 |
| 96 | AQLS | ART-LYN SERVICES INC | | | SCAC3 |
| 97 | AQLT | ALTANIC TRANSPORTATION INC | | | SCAC4 |
| 98 | AQLU | ALCOA-ALUMINERIE DE DESCHAMBOULT | | | SCAC4 |
| 99 | AQLV | ATLAS LOGISTICS PRIVATE LIMITED | | | SCAC4 |
| 100 | AQLW | ALLPORTS LOGISTICS LTD | | | SCAC4 |
