| 8401 | AMAL | Air Malta | Real: AMC | M | TRAFFIC |
| 8402 | AMAM | AMERICAN ALUMINUM RECYCLE | | | SCAC3 |
| 8403 | AMAM | ALMI MARINE MANAGEMENT SA | | | SCAC4 |
| 8404 | AMAN | AMERICAN MATERIALS TRANSPORT INC | | | SCAC4 |
| 8405 | AMAO | AMERICAN MOVING & STORAGE CO INC | | | SCAC3 |
| 8406 | AMAP | A M A TRANSPORTATION CO INC | | | SCAC3 |
| 8407 | AMAP | A M A TRANSPORTATION CO INC | | | SCAC4 |
| 8408 | AMAQ | AMERICAN AEROSOL TRUCKING | | | SCAC3 |
| 8409 | AMAQ | AMERICAN-IRAQI SHIPPING LINE INC | | | SCAC4 |
| 8410 | AMAR | ANRECE & MORGA AUTO EXPRESS SA DE C | | | SCAC4 |
| 8411 | AMAS | ARROW MOVING AND STORAGE CO, INC | | | SCAC3 |
| 8412 | AMAS | ARROW MOVING AND STORAGE CO, INC | | | SCAC4 |
| 8413 | AMAU | ALIANÇA EQUIQ. CONTÊINERES MANAUS LTDA | | BR | BIC |
| 8414 | AMAU | ANTILLES MARINE SERVICES CO., LTD | | | SCAC3 |
| 8415 | AMAU | AMA-ASSOCIATED MARITIME AGENCIES LT | | | SCAC4 |
| 8416 | AMAU | Air Mauritius | Real: MAU | MUS | TRAFFIC |
| 8417 | AMAW | APEX SHIPPING CO | | | SCAC4 |
| 8418 | AMAX | AMAX Coal Co. | added 7/1988; 1/1994; eliminated 7/1997; 7/2000-7/2005 (not listed) | | NAKINA |
| 8419 | AMAX | AMAX Coal Co., a Division of AMAX, Inc. | added 10/1974; 1/1975-1/1985; eliminated 7/1988 | | NAKINA |
| 8420 | AMAX | Arthur M. Adler Tank Line (General American Tank Car Corp.) | 8/1920-7/1923 | | NAKINA |
| 8421 | AMAX | AMAX Coal Co., a Division of AMAX, Inc. | added 10/74; 1/75-1/80; eliminated 7/88 | | NRHS |
| 8422 | AMAX | AMAX Coal Co. | added 7/88; 1/94; eliminated 7/97; 7/2000 | | NRHS |
| 8423 | AMAX | *ARTHUR M. ADLER TANK LINE (GENERAL AMERICAN TANK CAR CORP.) | | | PWRC |
| 8424 | AMAX | +AMAX COAL COMPANY | | | PWRC |
| 8425 | AMAX | AMAX Coal | | | RSRV |
| 8426 | AMAX | AMAX COAL COMPANY | | | SCAC4 |
| 8427 | AMAY | AMERICAN DIVERSIFIED DISTRIBUTION L | | | SCAC4 |
| 8428 | AMB | Deutsche Rettungsflugwacht | IATA: 1I, Callsign: Civil Air Ambulance, Name changed to DRF - Stiftung Luftrettung Gemeinnuetzige AG. Previously used IATA code DV | D | AVCODES |
| 8429 | AMB | Deutsche Rettungsflugwacht | IATA: DV, Callsign: Air Ambulance, Designator DV recalled by IATA | D | AVCODES |
| 8430 | AMB | Deutsche Rettungsflugwacht | IATA: 1I | | ICAO1 |
| 8431 | AMB | AMERICAN BRIDGE | | | PWRC |
| 8432 | AMBA | AMBASSADOR MARITIME INC | | | SCAC4 |
| 8433 | AMBB | AMERITRANS CORPORATION | | | SCAC3 |
| 8434 | AMBC | AMBUCAR SERVICE | | | SCAC3 |
| 8435 | AMBC | AMSTELLAND SHIPPING B V | | | SCAC4 |
| 8436 | AMBER | Anber Coaches | City: Rayleigh | GB | TRAFFIC |
| 8437 | AMBF | AMERICAN BASIC TRANSPORT INC | | | SCAC3 |
| 8438 | AMBF | ARMSTRONG RELOCATION CO (BROKERAGE | | | SCAC4 |
| 8439 | AMBG | AMERICAN BARGE CARRIERS INC | | | SCAC3 |
| 8440 | AMBI | AMAN BROS INC | | | SCAC3 |
| 8441 | AMBJ | A-M BUS CO INC | | | SCAC3 |
| 8442 | AMBJ | ARMENTA BOJORQUEZ, JESUS | | | SCAC4 |
| 8443 | AMBL | ALIMENTOS BOLONIA | | | SCAC4 |
| 8444 | AMBM | AMERICAN BONDED MOVING & STORAGE CO | | | SCAC3 |
| 8445 | AMBN | AMSBERRY INC | | | SCAC3 |
| 8446 | AMBN | AMSBERRY INC | | | SCAC4 |
| 8447 | AMBO | AMBROSE TRUCKING | | | SCAC3 |
| 8448 | AMBP | AMERICAS BEST INC | | | SCAC3 |
| 8449 | AMBP | AMEY, B TRANSPORT | | | SCAC4 |
| 8450 | AMBQ | AMERICAN BACKHAULERS CORPORATION | | | SCAC3 |
| 8451 | AMBR | AMBROSIA, C D, TRUCKING CO | | | SCAC3 |
| 8452 | AMBR | Ambrogio Trasporti S.p.A. | | IT | VKM |
| 8453 | AMBRO | AMBRO S.A | | RO | VKM |
| 8454 | AMBS | AMBROSE TRUCKING INC | | | SCAC3 |
| 8455 | AMBT | AMBER TRUCK LINES | | | SCAC3 |
| 8456 | AMBT | AMBERT INTERNATIONAL LOGISTICS | | | SCAC4 |
| 8457 | AMBU | AMBER LINE, INC. | | | PWRC |
| 8458 | AMBU | Amber Line | | | RSRV |
| 8459 | AMBU | AMBER LINE, INC. | | | SCAC3 |
| 8460 | AMBU | AMBER LINE, INC. | | | SCAC4 |
| 8461 | AMBV | AMI BUS SERVICE | | | SCAC3 |
| 8462 | AMBW | AMBASSADOR BROKERAGE LTD | | | SCAC3 |
| 8463 | AMBW | AMERICAS BESTWAY | | | SCAC4 |
| 8464 | AMBX | American Boiler Works, Inc. | 7/2000-7/2005 (not listed) | | NAKINA |
| 8465 | AMBX | Amherst Industries, Inc. | added 1/1961; 4/1961-1/1985; eliminated 10/1990 | | NAKINA |
| 8466 | AMBX | Amherst Barge Co. | added 1/1960; eliminated 1/1961 | | NAKINA |
| 8467 | AMBX | American Bridge Co. | 8/1920-7/1936; 7/1937 (not listed) | | NAKINA |
| 8468 | AMBX | Amherst Barge Co. | added 1/60 | | NRHS |
| 8469 | AMBX | Amherst Industries, Inc. | 4/61-1/80; eliminated 10/90 | | NRHS |
| 8470 | AMBX | American Boiler Works, Inc. | Jul-00 | | NRHS |
| 8471 | AMBX | *AMERICAN BRIDGE CO. | | | PWRC |
| 8472 | AMBX | +AMERICAN BOILER WORKS INC. [AMHERST BARGE; AMHERST INDUSTRIES] | | | PWRC |
| 8473 | AMBX | Amherst Industries (American Boiler Works) | | | RSRV |
| 8474 | AMBY | AMBOY EXPRESS | | | SCAC3 |
| 8475 | AMBZ | AMGER MAILING | | | PWRC |
| 8476 | AMC | Air Malta p.l.c. | IATA: KM, Callsign: Air Malta, IATA Prefix: 643, Name changed to Air Malta Co. Ltd. ICAO callsign changed to Kilo Mike | M | AVCODES |
| 8477 | AMC | Air Malta co. Ltd. | IATA: KM, Callsign: Kilo Mike, IATA Prefix: 643, Name changed to Air Malta p.l.c. ICAO callsign changed to Air Malta | M | AVCODES |
| 8478 | AMC | Air Malta | IATA: KM | | ICAO1 |
| 8479 | AMC | Arkansas Louisiana & Mississippi R.R. Co. | added 7/1997; 7/2000-7/2005 | | NAKINA |
| 8480 | AMC | Amador Central R.R. Co. | 1/1975-1/1994; eliminated 7/1997 | | NAKINA |
| 8481 | AMC | Amador Central R.R. Co. | 1/75-1/94; eliminated 7/97 | | NRHS |
| 8482 | AMC | Arkansas Louisiana & Mississippi R.R. Co. | added 7/97; 7/2000 | | NRHS |
| 8483 | AMC | *AMADOR CENTRAL RAILROAD | | | PWRC |
| 8484 | AMC | +ARKANSAS LOUISIANA & MISSISSIPPI RR | | | PWRC |
| 8485 | AMC | Amador Central Railroad | | | RSRV |
| 8486 | AMC | Arkansas, Louisiana and Mississippi Railroad | | | RSRV |
| 8487 | AMC | Amador Central Railroad Company | | USA | TRAFFIC |
| 8488 | AMCA | AMERICAN CARGO FORWARDING, INC. | | | SCAC3 |
| 8489 | AMCA | Aircraft Maintenance Company (AMC Airlines) | Real: AMC | ET | TRAFFIC |
| 8490 | AMCB | AMERICAN COURIER LTD | | | SCAC3 |
| 8491 | AMCC | AMERICAN CARTAGE CO | | | SCAC3 |
| 8492 | AMCD | AMERICAN CONSOLIDATORS | | | SCAC3 |
| 8493 | AMCD | AMERICAN CARTAGE & DISTRIBUTION LLC | | | SCAC4 |
| 8494 | AMCF | AMERICAN TRANSPORTATION SYSTEMS | | | SCAC3 |
| 8495 | AMCG | AMCO CARGO SYSTEMS LIMITED | | | SCAC4 |
| 8496 | AMCH | AMOCO CHEMICALS COMPANY (BP AMOCO) | | | PWRC |
| 8497 | AMCH | A M CARGO INTERNATIONAL CO | | | SCAC3 |
| 8498 | AMCI | AMERI-CANA TRANSPORT INC | | | SCAC3 |
| 8499 | AMCJ | AMSTAR | | | SCAC4 |
| 8500 | AMCK | AMERICAN CRUISE LINES | | | SCAC3 |
