| 14301 | ATGX | ATEL Leasing Corp. | added 10/1996; 7/2000-7/2005 | | NAKINA |
| 14302 | ATGX | Aurelius-Thomas Gasoline Co. | 8/1920-7/1923 | | NAKINA |
| 14303 | ATGX | ATEL Leasing Corp. | added 10/96; 7/2000 | | NRHS |
| 14304 | ATGX | *AURELIUS-THOMAS GASOLINE CO. | | | PWRC |
| 14305 | ATGX | +ATEL LEASING CORP. | | | PWRC |
| 14306 | ATGX | ATEL Leasing Corporation | | | RSRV |
| 14307 | ATGX | ATEL LEASING CORPORATION | | | SCAC4 |
| 14308 | ATGY | AAA TRAVEL AGENCY | | | SCAC3 |
| 14309 | ATGY | AGRICULTURE TECHNOLOGY INCORPORATED | | | SCAC4 |
| 14310 | ATH | Air Travel Corp. | Callsign: Air Travel, | USA | AVCODES |
| 14311 | ATH | Aircraft Systems South Africa | Callsign: Globestar, | ZA | AVCODES |
| 14312 | ATH | Air Travel Corp. | | | ICAO1 |
| 14313 | ATHA | ATHA TRUCKING INC | | | SCAC3 |
| 14314 | ATHA | Thai Airways International | Real: THA | T | TRAFFIC |
| 14315 | ATHC | ATON SHIPPING CORP | | | SCAC3 |
| 14316 | ATHE | ATHEY TRUCKING | | | SCAC3 |
| 14317 | ATHE | ATHEY FREIGHTWAYS INCORPORATED | | | SCAC4 |
| 14318 | ATHEN | Athens Urban Transport Organisation | Real: OASA | GR | TRAFFIC |
| 14319 | ATHF | ALTECH FABRICATORS LTD | | | SCAC4 |
| 14320 | ATHG | ARMSTRONG TRANSFER & STORAGE CO | | | SCAC3 |
| 14321 | ATHG | AGUILAR TOVAR, HUGO | | | SCAC4 |
| 14322 | ATHH | ALLIED TRANSPORTATION SERVICES COMPANY, INC | | | SCAC3 |
| 14323 | ATHI | ATKINS & HOYLE LTD | | | SCAC4 |
| 14324 | ATHJ | ATCO TRUCKING CO INC | | | SCAC3 |
| 14325 | ATHJ | AMR TRANSPORTATION SERVICES LLC | | | SCAC4 |
| 14326 | ATHK | ATHBAR CORP | | | SCAC3 |
| 14327 | ATHL | ARMSTRONG, THOMAS L & SONS LTD | | | SCAC3 |
| 14328 | ATHL | ARMSTRONG, THOMAS L & SONS LTD | | | SCAC4 |
| 14329 | ATHM | A TOUCH OF CLASS MOVING SERVICE INC | | | SCAC3 |
| 14330 | ATHN | AMADO TRUCKING INC | | | SCAC3 |
| 14331 | ATHN | AMADO TRUCKING INC | | | SCAC4 |
| 14332 | ATHO | ATHENS TRUCKING COMPANY | | | SCAC3 |
| 14333 | ATHO | ATHLOS ENE | | | SCAC4 |
| 14334 | ATHOS | Athos Rail S.A. | | E | TRAFFIC |
| 14335 | ATHP | A A TRANSPORTATION INC | | | SCAC3 |
| 14336 | ATHP | ARTESANIAS HERMANOS LOPEZ | | | SCAC4 |
| 14337 | ATHQ | AUTOCARS THETFORD INC | | | SCAC3 |
| 14338 | ATHQ | AUTOCARS THETFORD INC | | | SCAC4 |
| 14339 | ATHR | ATHERTON & SONS MOVING & STORAGE IN | | | SCAC3 |
| 14340 | ATHR | ATHERTON & SONS MOVING & STORAGE IN | | | SCAC4 |
| 14341 | ATHS | ANTHONYS TRANSFER SERVICE | | | SCAC3 |
| 14342 | ATHT | ATHENS TRANSPORTATION SYSTEM | | | SCAC3 |
| 14343 | ATHU | QUANZHOU ANTONG LOGISTICS CO., LTD. | | PRC | BIC |
| 14344 | ATHV | ALL-STATES TRANSPORT SERVICE INC | | | SCAC3 |
| 14345 | ATHV | AL PETE MEATS INC | | | SCAC4 |
| 14346 | ATHW | AROUND THE WORLD TRAVEL INC | | | SCAC3 |
| 14347 | ATHY | ATHERTON, LARRY TRUCKING | | | SCAC3 |
| 14348 | ATI | Aero-Tropics Air Services d/b/a Lip Air Ltd. | IATA: HC, Name changed to Lip-Air Pty. Ltd. d/b/a Aero-Tropics Air Services. Name changed from Lip-Air d/b/a Aero Tropics | AUS | AVCODES |
| 14349 | ATI | Societa Aero Trasporti Italiani S.p.A. (ATI) | IATA: BM, Callsign: ATI, Merged into Alitalia on 30 October 1994. | I | AVCODES |
| 14350 | ATI | Lip-Air d/b/a Aero Tropics | IATA: HC, Name changed to Aero-Tropics Air Services d/b/a Lip Air Ltd. | AUS | AVCODES |
| 14351 | ATI | Lip-Air Pty. Ltd. d/b/a Aero-Tropics Air Services | IATA: HC, Name changed from Aero-Tropics Air Services d/b/a Lip Air Ltd. Name previously changed from Lip-Air d/b/a Aero Tropics | AUS | AVCODES |
| 14352 | ATI | Art Avia LLC | Callsign: Art Avia, | RUS | AVCODES |
| 14353 | ATI | Aero-Tropics Air Services | IATA: HC | | ICAO1 |
| 14354 | ATIA | ALTIM INC | | | SCAC3 |
| 14355 | ATIA | AU TEMPS TIC AUTO | | | SCAC4 |
| 14356 | ATIB | ACTIVE TRANSPORT INC | | | SCAC3 |
| 14357 | ATIB | ACTIVE TRANSPORT INC | | | SCAC4 |
| 14358 | ATIB | Alpha Trains Iberia SA | | ES | VKM |
| 14359 | ATIC | AMERICAN TRANSPORTATION INC | | | SCAC3 |
| 14360 | ATIC | ATI | | | SCAC4 |
| 14361 | ATID | ATI | | | SCAC4 |
| 14362 | ATIE | ATLANTIC INTERMOUNTAIN EXPRESS INC | | | SCAC3 |
| 14363 | ATIE | ARMSTRONG TRANSPORT GROUP INC | | | SCAC4 |
| 14364 | ATIF | ATLANTIC FOODS INC | | | SCAC3 |
| 14365 | ATIH | ATIM CARRIERS INC | | | SCAC3 |
| 14366 | ATIH | AUTOFLETES INTERNACIONALES HALCON | | | SCAC4 |
| 14367 | ATII | ACTIVE TRANSFER CO | | | SCAC3 |
| 14368 | ATII | ATPAC TRANSPORT INC / ATPAC TRANSPO | | | SCAC4 |
| 14369 | ATIK | ARROW TRANSPORTATION (INT) INC | | | SCAC3 |
| 14370 | ATIL | ANTILLES TRUCKING CORPORATION | | | SCAC3 |
| 14371 | ATIL | ANTILLES TRUCKING CORPORATION | | | SCAC4 |
| 14372 | ATIM | ATLANTIC INTERSTATE MESSENGERS INC | | | SCAC3 |
| 14373 | ATIM | ALWAYS TRUCKING INC | | | SCAC4 |
| 14374 | ATIN | ALLEN TRANSPORTATION INCORPORATED | | | SCAC3 |
| 14375 | ATIO | ACTION TRUCKING CORP | | | SCAC3 |
| 14376 | ATIO | A & T TRANSPORTATION INC | | | SCAC4 |
| 14377 | ATIP | ATICO TRANSPORT INC | | | SCAC3 |
| 14378 | ATIQ | ATLANTIC TRUCKING CO | | | SCAC3 |
| 14379 | ATIQ | ASAP FREIGHT INCORPORATED | | | SCAC4 |
| 14380 | ATIR | A T I TRUCKING COMPANY INC | | | SCAC3 |
| 14381 | ATIR | ATLANTA FOODS INTERNATIONAL | | | SCAC4 |
| 14382 | ATIR | ATIR-RAIL S.A. | | F | TRAFFIC |
| 14383 | ATIT | ASSOCIATED TRANSPORT INC | | | PWRC |
| 14384 | ATIT | ARMADILLO TRANSPORT INC | | | SCAC3 |
| 14385 | ATIT | AUTOTRANSITOS INTERNACIONALES SA DE | | | SCAC4 |
| 14386 | ATIT | Alpha Trains Italia S.r.l. | | IT | VKM |
| 14387 | ATIU | SOCIETE AUXILLAIRE DE TRANSPORT ET D'INDUSTRIES | | | PWRC |
| 14388 | ATIU | Societe Auxillaire De Transport Et D'Industries | | | RSRV |
| 14389 | ATIU | EUROTAINER SAS | | | SCAC4 |
| 14390 | ATIV | ACTIVE TRANSFER COMPANY INC | | | SCAC3 |
| 14391 | ATIW | ATOMIC TRANSPORT INCORPORATED | | | SCAC3 |
| 14392 | ATIX | Alstom Transportation, Inc. | 7/2005 (not listed) | | NAKINA |
| 14393 | ATIX | ALSTOM TRANSPORTATION, INC. | | | PWRC |
| 14394 | ATIX | Alstom Transportation | | | RSRV |
| 14395 | ATIX | ALSTOM TRANSPORTATION INC | | | SCAC4 |
| 14396 | ATIY | ATLAS TOURS INC | | | SCAC3 |
| 14397 | ATJ | Air Traffic GmbH | Callsign: Snoopy, Designator TJ recalled by IATA | D | AVCODES |
| 14398 | ATJ | Air Traffic GmbH | IATA: TJ, Callsign: Snoopy, Designator TJ recalled by IATA | D | AVCODES |
| 14399 | ATJ | Air Traffic GmbH | | | ICAO1 |
| 14400 | ATJC | AROUND THE CLOCK AUTO TRANSPORT INC | | | SCAC3 |
