| 1 | ABI | Antigua And Barbuda Airways International Ltd., | Callsign: Anair, | AG | AVCODES |
| 2 | ABI | Alba-Air Aviacion, S.L. | Callsign: Airalabacete, | E | AVCODES |
| 3 | ABIA | ARABIAN TRANSPORT | | | SCAC3 |
| 4 | ABIB | ANDERSON BROS INC | | | SCAC4 |
| 5 | ABIC | ABLE INC | | | SCAC3 |
| 6 | ABIC | ABC TRANPORTATION INC | | | SCAC4 |
| 7 | ABID | A & B TRAIN CARRIERS LTD | | | SCAC3 |
| 8 | ABID | ABIDE MOVING & STORAGE INC | | | SCAC4 |
| 9 | ABIE | ALBANY-BINGHAMTON EXPRESS INC | | | SCAC3 |
| 10 | ABIF | AMBER TERMINAL INC | | | SCAC4 |
| 11 | ABII | A B I INC | | | SCAC3 |
| 12 | ABIJ | A B C LIMO | | | SCAC3 |
| 13 | ABIJ | AUTOBUSES BORINQUEN INC | | | SCAC4 |
| 14 | ABIK | ABC CARRIER LLC | | | SCAC4 |
| 15 | ABIM | ABILENE IRON & METALS INC | | | SCAC3 |
| 16 | ABIM | AURORA BIOMED INC | | | SCAC4 |
| 17 | ABIN | A B C CARTAGE INC | | | SCAC3 |
| 18 | ABIN | ALLIED BROTHERS INTERMODAL INC | | | SCAC4 |
| 19 | ABIO | ALBION TRUCKING INC | | | SCAC3 |
| 20 | ABIQ | ABI LOGISTICS GROUP INC | | | SCAC4 |
| 21 | ABIS | ABACO INTERNATIONAL SHIPPERS INC | | | SCAC3 |
| 22 | ABIS | A BOULDER INSTITUTE INC | | | SCAC4 |
| 23 | ABIT | ARBA, TIM TRUCKING INC | | | SCAC4 |
| 24 | ABIW | A-1 (A-1) BESTWAY INC | | | SCAC4 |
| 25 | ABIX | Anheuser-Busch, Inc. | added 7/1954; 7/1954-7/1965; eliminated 10/1965; added 1/1974; 1/1975; eliminated 7/1978; added 10/1979; 1/1980-1/1994; eliminated 10/1996; 7/2000-7/2005 (unlisted) | | NAKINA |
| 26 | ABIX | Anheuser-Busch, Inc. | 10/57-7/65; eliminated 10/65; added 1/74; 1/75; eliminated 7/78; 1/80-1/94; eliminated 10/96; 7/2000 | | NRHS |
| 27 | ABIX | ANHEUSER-BUSCH, INC. | | | PWRC |
| 28 | ABIX | Anheuser-Busch | | | RSRV |
| 29 | ABIY | ABILITY TRANSPORTATION | | | SCAC3 |
| 30 | ABIY | ABILITY TRANSPORTATION | | | SCAC4 |
| 31 | ABIZ | ABSOLUTE INTERMODAL LLC | | | SCAC4 |
