| 1 | AKC | Arca Aerovias Colombianas Ltda. | IATA: ZU, Callsign: Arca, Ceased operations. | CO | AVCODES |
| 2 | AKC | Arca Aerovias Colombianas Ltda. | IATA: RH, Callsign: Arca, Designator RH recalled by IATA | CO | AVCODES |
| 3 | AKC | PT. Asialink Cargo Express | IATA: KP, Callsign: Asialink Cargo, IATA Prefix: 385, | RI | AVCODES |
| 4 | AKC | Arca Aerovias Colombianas Ltda. | | | ICAO1 |
| 5 | AKC | Arkansas Central R.R. Co. | 8/1920-7/1923 | | NAKINA |
| 6 | AKC | Arkansas Central R.R. Co. | 23-Jul | | NRHS |
| 7 | AKC | ARKANSAS CENTRAL RAILROAD | | | PWRC |
| 8 | AKC | Arkansas Central Railroad | | | RSRV |
| 9 | AKCC | AHALT, R K TRUCKING | | | SCAC4 |
| 10 | AKCE | ALASKA CENTRAL EXPRESS | | | SCAC4 |
| 11 | AKCG | ALFONS KOSTER & CO GMBH | | | SCAC4 |
| 12 | AKCI | AKRON-CANTON INTERNATIONAL FORWARDI | | | SCAC3 |
| 13 | AKCI | AMBER TRUCKING COMPANY OF ILLINOIS | | | SCAC4 |
| 14 | AKCK | AKINS, CALVIN K | | | SCAC3 |
| 15 | AKCL | ALASKA CARGO LINES | | | SCAC3 |
| 16 | AKCM | ARKCOM INC | | | SCAC3 |
| 17 | AKCN | AKRON CORPORATION | | | SCAC3 |
| 18 | AKCO | ATLANTIA TANKER CORPORATION | | | SCAC3 |
| 19 | AKCO | ATLANTIA TANKER CORPORATION | | | SCAC4 |
| 20 | AKCP | ATLANTIA TANKER CORPORATION | | | SCAC3 |
| 21 | AKCR | ARKANSAS CARRIERS CORPORATION | | | SCAC3 |
| 22 | AKCS | ALASKA COAST TRANSPORT INC | | | SCAC3 |
| 23 | AKCS | ALASKA COAST TRANSPORT INC | | | SCAC4 |
| 24 | AKCT | ALASKA CARGO TRANSPORT INC | | | SCAC3 |
| 25 | AKCT | ALASKA CARGO TRANSPORT INC | | | SCAC4 |
| 26 | AKCU | AK CHEMIE GMBH & CO. KG | | | SCAC3 |
| 27 | AKCU | AK CHEMIE GMBH & CO. KG | | | SCAC4 |
| 28 | AKCV | ACS | | | SCAC4 |
| 29 | AKCW | AROUKA TANKER CORP | | | SCAC4 |
