| 1501 | ABQI | ABSOLUTE LOGISTICS INC | | | SCAC4 |
| 1502 | ABQL | ABACO TREASURE LTD FORT PIRECE FL | | | SCAC3 |
| 1503 | ABQL | ABACO TREASURE LTD FORT PIRECE FL | | | SCAC4 |
| 1504 | ABQM | A B C MOVING & STORAGE CO INC | | | SCAC3 |
| 1505 | ABQP | A & B TRANSPORT INC | | | SCAC4 |
| 1506 | ABQR | ABS TRANSPORTATION | | | SCAC4 |
| 1507 | ABQS | AMBERLEY SHIPPING CORP | | | SCAC3 |
| 1508 | ABQS | A & B LOGISTICS INC | | | SCAC4 |
| 1509 | ABQT | ABLE TRANSPORTATION | | | SCAC3 |
| 1510 | ABQV | A BETTER COURIER SERVICE | | | SCAC3 |
| 1511 | ABR | Air Contractors (Ireland) Limited | IATA: AG, Callsign: Contract, IATA Prefix: 912, Designator AG recalled by IATA. Company transfered from United Kingdom | IRL | AVCODES |
| 1512 | ABR | Air Bridge Carriers Ltd. (ABC) | IATA: AK, Callsign: Airbridge, | GB | AVCODES |
| 1513 | ABR | Air Contractors (UK) Limited | IATA: AG, Callsign: Contract, IATA Prefix: 912, Company transfered to Ireland. Name changed from Hunting Air Cargo Airlines Ltd. | GB | AVCODES |
| 1514 | ABR | Hunting Air Cargo Airlines Ltd. | IATA: AG, Callsign: Contract, Name changed to Air Contractors (UK) Limited | GB | AVCODES |
| 1515 | ABR | Air Contractors (Ireland) Limited | Callsign: Contract, IATA Prefix: 912, Name changed to ASL Airlines Ireland Ltd w.e.f. 04 June 2015. Designator AG recalled by IATA. Company transfered from United Kingdom | IRL | AVCODES |
| 1516 | ABR | ASL Airlines (Ireland) Limited | Callsign: Contract, IATA Prefix: 912, Name changed from Air Contractors (Ireland) Limited w.e.f. 04 June 2015. Designator AG recalled by IATA. Company transfered from United Kingdom | IRL | AVCODES |
| 1517 | ABR | Air Contractors | IATA: AG | | ICAO1 |
| 1518 | ABR | The Athens Line, LLC | 7/2005 | | NAKINA |
| 1519 | ABR | ATHENS LINES LLC | | | PWRC |
| 1520 | ABR | Athens Line | | | RSRV |
| 1521 | ABR | ATHENS LINE LLC, THE | | | SCAC4 |
| 1522 | ABR | Abellio GmbH | | D | TRAFFIC |
| 1523 | ABRA | Arriva Bratislava | | SK | TRAFFIC |
| 1524 | ABRB | AMBLER, ROBERT | | | SCAC3 |
| 1525 | ABRC | ASBRAND, CHRISTIAN C | | | SCAC3 |
| 1526 | ABRD | AGUIRRE BORBOA, RICARDO | | | SCAC4 |
| 1527 | ABRF | ABC TRANSFER COMPANY | | | SCAC3 |
| 1528 | ABRF | AGUIRRE BARBA, RAFAEL | | | SCAC4 |
| 1529 | ABRG | ALTER BARGE LINES INC | | | SCAC3 |
| 1530 | ABRH | AMBROSIA SHIPPING INC | | | SCAC4 |
| 1531 | ABRI | ABC RELOCATION SERVICES INC | | | SCAC3 |
| 1532 | ABRK | ABC TRUCKING | | | SCAC3 |
| 1533 | ABRL | ABEAR MOBILE HOMES INC | | | SCAC3 |
| 1534 | ABRM | ABRAMS TRUCKING INC | | | SCAC4 |
| 1535 | ABRM | Abello Rail Mitteldeutschland GmbH | | DE | VKM |
| 1536 | ABRN | Abellio Rail NRW GmbH | Essen | D | privat-bahn.de |
| 1537 | ABRN | ALBERTSONS INC | | | SCAC3 |
| 1538 | ABRN | Abellio Rail NRW GmbH | | DE | VKM |
| 1539 | ABRO | ABROS LEASING CORP | | | SCAC3 |
| 1540 | ABRP | ALLBRECHT TRUCKING | | | SCAC3 |
| 1541 | ABRQ | A B C RAPID DELIVERY INC | | | SCAC3 |
| 1542 | ABRQ | A B C RAPID DELIVERY INC | | | SCAC4 |
| 1543 | ABRR | AUTO EXPRESS BARRERA | | | SCAC4 |
| 1544 | ABRRS | Road & Rail Service | | DE | VKM |
| 1545 | ABRS | ALBERS, WARREN | | | SCAC3 |
| 1546 | ABRS | AUTO & BOAT RELOCATION SERVICES LLC | | | SCAC4 |
| 1547 | ABRT | AUBRY TRANSPORTATION INC | | | SCAC3 |
| 1548 | ABRV | ALBRECT, VICTOR | | | SCAC3 |
| 1549 | ABRV | ANDERSON BROTHERS INC | | | SCAC4 |
| 1550 | ABRW | ANDERSON, B R & CO. SEATTLE | | | SCAC3 |
| 1551 | ABRX | LHSTL Railway Co. | added 7/2008; eliminated 1/2010 | | NAKINA |
| 1552 | ABRX | Railmark Holdings Inc. | added 1/2004; eliminated 4/2004; 7/2005 (unlisted) | | NAKINA |
| 1553 | ABRX | AB Rail Investments, Inc. | 7/2000 (not listed) | | NAKINA |
| 1554 | ABRX | Merchants Despatch Transportation Corp. | 4/1938-4/1947 | | NAKINA |
| 1555 | ABRX | Merchants Despatch Transportation Corp. (Abraham Bros. Packing Co.) | 7/1937 | | NAKINA |
| 1556 | ABRX | Abraham Bros. Packing Co. | Apr-38 | | NRHS |
| 1557 | ABRX | AB Rail Investments, Inc. | Jul-00 | | NRHS |
| 1558 | ABRX | *MERCHANTS DESPATCH TRANSPORTATION CORP. (ABRAHAM BROS. PACKING CO.) | | | PWRC |
| 1559 | ABRX | *ADRIAN & BLISSFIELD RAILROAD | | | PWRC |
| 1560 | ABRX | *AB RAIL INVESTMENTS INC. | | | PWRC |
| 1561 | ABRX | *RAILMARK HOLDINGS INC. | | | PWRC |
| 1562 | ABRX | +LHSTL RAILWAY CO. | | | PWRC |
| 1563 | ABRX | AB Rail Investments (Railmark Holdings) | | | RSRV |
| 1564 | ABRX | RAILMARK HOLDINGS INC | | | SCAC4 |
| 1565 | ABS | Transwest Air Limited | IATA: 9T, Callsign: Athabaska, IATA Prefix: 909, Name changed from Athabaska Airways Ltd. Merged with Air Sask | CDN | AVCODES |
| 1566 | ABS | Athabaska Airways Ltd. | IATA: 9T, Callsign: Athabaska, IATA Prefix: 909, Name changed to Transwest Air Limited. Merged with Air Sask | CDN | AVCODES |
| 1567 | ABS | Afrijet Business Services (ABS) | IATA: J7, IATA Prefix: 277, Name changed to Afrijet Business Services d/b/a Afrijet | G | AVCODES |
| 1568 | ABS | Afrijet Business Services d/b/a Afrijet | IATA: J7, IATA Prefix: 277, Name changed from Afrijet Business Services (ABS). | G | AVCODES |
| 1569 | ABS | Transwest Air | IATA: 9T | | ICAO1 |
| 1570 | ABS | Alabama Southern R.R. | added 4/2008 | | NAKINA |
| 1571 | ABS | ALABAMA SOUTHERN RAILROAD | | | PWRC |
| 1572 | ABS | Alabama Southern Railroad | | | RSRV |
| 1573 | ABS | Autobus Sachsen GmbH | | D | TRAFFIC |
| 1574 | ABSA | ABSOLUTE DELIVERY INC | | | SCAC4 |
| 1575 | ABSC | ALABAMA STORAGE CO INC | | | SCAC3 |
| 1576 | ABSD | ABERDEEN SCHOOL DISTRICT NO 58 | | | SCAC3 |
| 1577 | ABSG | AMBASSADOR TRANSFER AND STORAGE | | | SCAC3 |
| 1578 | ABSG | ABS GLOBAL (CANADA) INC | | | SCAC4 |
| 1579 | ABSH | AIR BARR SHIPPING CO INC | | | SCAC3 |
| 1580 | ABSI | A B C SPECIAL DELIVERY INC | | | SCAC3 |
| 1581 | ABSI | ALLIED BUILDING STORES INC | | | SCAC4 |
| 1582 | ABSJ | ASTRO BUS LINES | | | SCAC3 |
| 1583 | ABSK | ABSHER TRUCKING COMPANY INC | | | SCAC3 |
| 1584 | ABSL | ABSOLUTE DELIVERY NETWORK, INC | | | SCAC3 |
| 1585 | ABSL | ABSOLUTE LOGISTICS LLC | | | SCAC4 |
| 1586 | ABSM | ABS FUEL SYSTEMS LLC | | | SCAC4 |
| 1587 | ABSN | ABERDOUR SHIPPING LTD | | | SCAC3 |
| 1588 | ABSO | ABC MESSENGER SERVICE INC | | | SCAC3 |
| 1589 | ABSO | ABSOLUTE TRANSPORTATION | | | SCAC4 |
| 1590 | ABSP | ABERNATHYS SCRAP METAL INC | | | SCAC3 |
| 1591 | ABSP | ABSOULUTE TRANSPORT INC | | | SCAC4 |
| 1592 | ABSQ | A-BEST WAY DELIVERY CO INC | | | SCAC3 |
| 1593 | ABSR | ABRASIVE SOLUTIONS INC | | | SCAC4 |
| 1594 | ABSU | AL SADIK AHMED A. BAABOUD SHIPPING CO. | | SA | BIC |
| 1595 | ABSU | ABICON SALES & REPAIR BV | | | SCAC4 |
| 1596 | ABSV | A & B TRUCK SERVICE INC | | | SCAC3 |
| 1597 | ABSX | American Crystal Sugar Co. | 7/1935-1/1943 | | NAKINA |
| 1598 | ABSX | American Beet Sugar Co. | 7/1932 | | NAKINA |
| 1599 | ABSX | American Crystal Sugar Co. | Apr-38 | | NRHS |
| 1600 | ABSX | *AMERICAN BEET SUGAR CO. (AMERICAN CRYSTAL SUGAR CO) | | | PWRC |
