| 6901 | AJXM | AJAX MARINE LIMITED | | | SCAC3 |
| 6902 | AJXR | A J EXPRESS TRUCKING INC | | | SCAC3 |
| 6903 | AJXS | A & J TRANSPORT SERVICES | | | SCAC4 |
| 6904 | AJXT | AJAX TRUCKING CO INC | | | SCAC3 |
| 6905 | AJY | Ajet Aviation Ltd | IATA: ZU, Callsign: Ayjet, Ceased operations on 06 November 2006. Name changed from Helios Airways Ltd w.e.f. 14 March 2006 | CY | AVCODES |
| 6906 | AJY | Ajwaa Airlines | Callsign: Ajwaa Airlines, | ET | AVCODES |
| 6907 | AJY | Ajet | | | ICAO1 |
| 6908 | AJYF | A J Y FISHERIES LTD | | | SCAC4 |
| 6909 | AJZ | Anglo American South Africa Limited | Callsign: Anglo Jet, | ZA | AVCODES |
| 6910 | AK | Air Asia Sen Bhd. t/a Air Asia | ICAO: AXM, Callsign: Asian Express, IATA Prefix: 807, ICAO Callsign changed to Red Cap. Desginator AK reinstated by IATA | MAL | AVCODES |
| 6911 | AK | Air Bridge Carriers Ltd. (ABC) | ICAO: ABR, Callsign: Airbridge, | GB | AVCODES |
| 6912 | AK | Alfa Jet | ICAO: AJE, Callsign: Alpha Jet, Designator AK recalled by IATA | E | AVCODES |
| 6913 | AK | Altair Airlines, Inc. | | USA | AVCODES |
| 6914 | AK | Aerokontakt | Callsign: Aerokontakt, Designator AK recalled by IATA | S | AVCODES |
| 6915 | AK | Air Asia Sen Bhd. t/a Air Asia | ICAO: AXM, Callsign: Red Cap, IATA Prefix: 807, ICAO Callsign changed from Asian Express. Desginator AK reinstated by IATA | MAL | AVCODES |
| 6916 | AK | Autokraft GmbH | | D | TRAFFIC |
| 6917 | AK | Adria kombi d.o.o., Ljubljana | | SI | VKM |
| 6918 | AKA | Air Korea Co. Ltd. | | ROK | AVCODES |
| 6919 | AKA | Air Korea Co. Ltd. | IATA: CD, Designator CD recalled by IATA | ROK | AVCODES |
| 6920 | AKA | Alaska International Air, Inc. | IATA: BF, Callsign: Interalas, Name changed to Markair, Inc. | USA | AVCODES |
| 6921 | AKA | Air Korea Co. Ltd. | | | ICAO1 |
| 6922 | AKAB | AHISKA TRUCKING LLC | | | SCAC4 |
| 6923 | AKAC | ADIMARK & CC TRANSPORT INC | | | SCAC4 |
| 6924 | AKAD | A-KALALA TRUCKING LTD | | | SCAC4 |
| 6925 | AKAE | ARK AIR EXPRESS | | | SCAC4 |
| 6926 | AKAF | AIRKON AIR FREIGHT INC | | | SCAC3 |
| 6927 | AKAH | ALASKA HOMES | | | SCAC3 |
| 6928 | AKAI | AKA INC | | | SCAC3 |
| 6929 | AKAK | ALASKA AUTO TRANSPORT LLC | | | SCAC4 |
| 6930 | AKAL | ALASKA AIRLINES (AIR CODE AS) | | | SCAC4 |
| 6931 | AKAM | A K A TRUCKING COMPANY | | | SCAC3 |
| 6932 | AKAN | ALASKAN EXPRESS SERVICE INC | | | SCAC4 |
| 6933 | AKAN | Akan Bus | | J | TRAFFIC |
| 6934 | AKAO | AKA TRANSPORTATION LLC | | | SCAC4 |
| 6935 | AKAP | ATLANTSKA PLOVIDBA | | | SCAC3 |
| 6936 | AKAP | ATLANTSKA PLOVIDBA | | | SCAC4 |
| 6937 | AKAS | ANO KARDAMYLA SHIPPING SPECIAL MARI | | | SCAC4 |
| 6938 | AKAT | AKA TRUCKING CO INC | | | SCAC4 |
| 6939 | AKAU | PE ANYKIEIENKO KONSTIANTYN | | UA | BIC |
| 6940 | AKAW | ALASKA AIR FORWARDING | | | SCAC4 |
| 6941 | AKAY | ARK TRANSPORTATION INC | | | SCAC4 |
| 6942 | AKB | Aktjubavia | Callsign: Karab, | KZ | AVCODES |
| 6943 | AKB | Aktjubavia | | | ICAO1 |
| 6944 | AKBG | ALASKA BARGE AND TRANSPORT INC | | | SCAC3 |
| 6945 | AKBK | A K TRUCKING | | | SCAC4 |
| 6946 | AKBL | ALASKA BARGE LINES INC | | | SCAC3 |
| 6947 | AKBT | AKB TRANSPORT LLC | | | SCAC4 |
| 6948 | AKBU | ALLNEX RESINS NETHERLANDS BV | | NL | BIC |
| 6949 | AKBU | AKZO NOBEL RESINS BV | | | SCAC4 |
| 6950 | AKBV | AROOSTOOK BEVERAGE COMPANY | | | SCAC3 |
| 6951 | AKC | Arca Aerovias Colombianas Ltda. | IATA: ZU, Callsign: Arca, Ceased operations. | CO | AVCODES |
| 6952 | AKC | Arca Aerovias Colombianas Ltda. | IATA: RH, Callsign: Arca, Designator RH recalled by IATA | CO | AVCODES |
| 6953 | AKC | PT. Asialink Cargo Express | IATA: KP, Callsign: Asialink Cargo, IATA Prefix: 385, | RI | AVCODES |
| 6954 | AKC | Arca Aerovias Colombianas Ltda. | | | ICAO1 |
| 6955 | AKC | Arkansas Central R.R. Co. | 8/1920-7/1923 | | NAKINA |
| 6956 | AKC | Arkansas Central R.R. Co. | 23-Jul | | NRHS |
| 6957 | AKC | ARKANSAS CENTRAL RAILROAD | | | PWRC |
| 6958 | AKC | Arkansas Central Railroad | | | RSRV |
| 6959 | AKCC | AHALT, R K TRUCKING | | | SCAC4 |
| 6960 | AKCE | ALASKA CENTRAL EXPRESS | | | SCAC4 |
| 6961 | AKCG | ALFONS KOSTER & CO GMBH | | | SCAC4 |
| 6962 | AKCI | AKRON-CANTON INTERNATIONAL FORWARDI | | | SCAC3 |
| 6963 | AKCI | AMBER TRUCKING COMPANY OF ILLINOIS | | | SCAC4 |
| 6964 | AKCK | AKINS, CALVIN K | | | SCAC3 |
| 6965 | AKCL | ALASKA CARGO LINES | | | SCAC3 |
| 6966 | AKCM | ARKCOM INC | | | SCAC3 |
| 6967 | AKCN | AKRON CORPORATION | | | SCAC3 |
| 6968 | AKCO | ATLANTIA TANKER CORPORATION | | | SCAC3 |
| 6969 | AKCO | ATLANTIA TANKER CORPORATION | | | SCAC4 |
| 6970 | AKCP | ATLANTIA TANKER CORPORATION | | | SCAC3 |
| 6971 | AKCR | ARKANSAS CARRIERS CORPORATION | | | SCAC3 |
| 6972 | AKCS | ALASKA COAST TRANSPORT INC | | | SCAC3 |
| 6973 | AKCS | ALASKA COAST TRANSPORT INC | | | SCAC4 |
| 6974 | AKCT | ALASKA CARGO TRANSPORT INC | | | SCAC3 |
| 6975 | AKCT | ALASKA CARGO TRANSPORT INC | | | SCAC4 |
| 6976 | AKCU | AK CHEMIE GMBH & CO. KG | | | SCAC3 |
| 6977 | AKCU | AK CHEMIE GMBH & CO. KG | | | SCAC4 |
| 6978 | AKCV | ACS | | | SCAC4 |
| 6979 | AKCW | AROUKA TANKER CORP | | | SCAC4 |
| 6980 | AKD | Alfa KR | Callsign: Alfa Asia, | KS | AVCODES |
| 6981 | AKD | Akdeniz Airlines | Callsign: Akdeniz Airlines, Founded in 1995. Commenced operations in June 1995. Ceased operations in December 1995. | TR | AVCODES |
| 6982 | AKDB | ALASKA DIRECT BUS LINE | | | SCAC3 |
| 6983 | AKDB | ALASKA DIRECT BUS LINES INC | | | SCAC4 |
| 6984 | AKDC | ATKINSON DISTRIBUTING INC | | | SCAC4 |
| 6985 | AKDH | ACKLAND, DUANE H | | | SCAC3 |
| 6986 | AKDN | Acadiana Ry. Co. | 1/1994-7/2005 | | NAKINA |
| 6987 | AKDN | Acadiana Ry. Co. | 1/94-7/2000 | | NRHS |
| 6988 | AKDN | ACADIANA RAILWAY COMPANY | | | PWRC |
| 6989 | AKDN | Acadiana Railway | | | RSRV |
| 6990 | AKDN | ACADIANA RAILWAY COMPANY | | | SCAC3 |
| 6991 | AKDN | ACADIANA RAILWAY COMPANY | | | SCAC4 |
| 6992 | AKDT | ALASKA DIRECT TRANSPORT, INC | | | SCAC3 |
| 6993 | AKDT | ALASKA DIRECT TRANSPORT INC | | | SCAC4 |
| 6994 | AKE | Air Maken | Callsign: Air Maken, | GQ | AVCODES |
| 6995 | AKE | AKE Eisenbahntouristik | | D | TRAFFIC |
| 6996 | AKEI | AKE TRANSPORTATION COMPANY INC | | | SCAC3 |
| 6997 | AKEL | AK EXPRESS TRANSPORTATION LLC | | | SCAC4 |
| 6998 | AKEN | AKENS MOVING AND STORAGE INC | | | SCAC3 |
| 6999 | AKEN | ALASKA EXCURSIONS | | | SCAC4 |
| 7000 | AKEP | A K EXPEDITE LTD | | | SCAC4 |
