| 1 | AHB | Aerolineas de Honduras, S.A. (AEHSA) | | HN | AVCODES |
| 2 | AHB | Air Alboran S.L. | Callsign: Alhambra, Ceased operations | E | AVCODES |
| 3 | AHB | Aalborg - Hvalpsund Jernbane (Hvalpsundbanen) | 1910 - 1969 | DK | jernbanen.dk |
| 4 | AHB | Aalborg - Hvalpsund Jernbane (Hvalpsundbanen) | 1910 - 1969 | DK | TRAFFIC |
| 5 | AHBC | APOLLO HEALTH AND BEAUTY CARE | | | SCAC4 |
| 6 | AHBS | AHBM SYSTEMS INC | | | SCAC4 |
| 7 | AHBX | Brown Chemical Co., Inc. | added 4/1975; eliminated 7/1978 | | NAKINA |
| 8 | AHBX | Brown Chemical Co., Inc. | added 4/75; eliminated 7/78 | | NRHS |
| 9 | AHBX | BROWN CHEMICAL CO. | | | PWRC |
| 10 | AHBZ | ANHEUSER BUSCH | | | PWRC |
