| 1 | AKD | Alfa KR | Callsign: Alfa Asia, | KS | AVCODES |
| 2 | AKD | Akdeniz Airlines | Callsign: Akdeniz Airlines, Founded in 1995. Commenced operations in June 1995. Ceased operations in December 1995. | TR | AVCODES |
| 3 | AKDB | ALASKA DIRECT BUS LINE | | | SCAC3 |
| 4 | AKDB | ALASKA DIRECT BUS LINES INC | | | SCAC4 |
| 5 | AKDC | ATKINSON DISTRIBUTING INC | | | SCAC4 |
| 6 | AKDH | ACKLAND, DUANE H | | | SCAC3 |
| 7 | AKDN | Acadiana Ry. Co. | 1/1994-7/2005 | | NAKINA |
| 8 | AKDN | Acadiana Ry. Co. | 1/94-7/2000 | | NRHS |
| 9 | AKDN | ACADIANA RAILWAY COMPANY | | | PWRC |
| 10 | AKDN | Acadiana Railway | | | RSRV |
| 11 | AKDN | ACADIANA RAILWAY COMPANY | | | SCAC3 |
| 12 | AKDN | ACADIANA RAILWAY COMPANY | | | SCAC4 |
| 13 | AKDT | ALASKA DIRECT TRANSPORT, INC | | | SCAC3 |
| 14 | AKDT | ALASKA DIRECT TRANSPORT INC | | | SCAC4 |
