| 1 | ATG | Aerotrans Airline | Callsign: Bachyt, | KZ | AVCODES |
| 2 | ATG | Air Togo | IATA: AX, Callsign: Alfa X-ray, | TG | AVCODES |
| 3 | ATG | Aerotranscargo | Callsign: Worldcargo, ICAO callsign changed to Moldcargo | MD | AVCODES |
| 4 | ATG | Aerotranscargo SRL | IATA: F5, Callsign: Moldcargo, ICAO callsign changed to Worldcargo | MD | AVCODES |
| 5 | ATG | Aerotrans Airline | | | ICAO1 |
| 6 | ATG | Autotransportlogistik GmbH | Eschborn | D | privat-bahn.de |
| 7 | ATG | Autotransportlogistic GmbH | City: Eschborn, verschmolzen auf DB Schenker Rail Automotive GmbH | D | TRAFFIC |
| 8 | ATG | DB Schenker | | DE | VKM |
| 9 | ATGA | ANDERSON TRUCKING COMPANY | | | SCAC3 |
| 10 | ATGB | ANDERSON TUG & BARGE CO | | | SCAC3 |
| 11 | ATGB | ANTIGMAR LIMITED | | | SCAC4 |
| 12 | ATGC | A T P TRUCKING COMPANY INC | | | SCAC3 |
| 13 | ATGD | ATLANTIC GOOD SERVICES, INC | | | SCAC3 |
| 14 | ATGD | ATLANTIC GOOD SERVICES INC | | | SCAC4 |
| 15 | ATGE | AMERICAN TOWING SERVICE INC | | | SCAC3 |
| 16 | ATGE | AIR TIGER EXPRESS (U S A) INC | | | SCAC4 |
| 17 | ATGF | ATLANTIC GULF & STEVEDORING | | | SCAC3 |
| 18 | ATGF | ARMSTRONG TRANSFER & STORAGE CO INC | | | SCAC4 |
| 19 | ATGG | ALS TRUCKING SERVICE | | | SCAC3 |
| 20 | ATGG | AUTOTRANSPORTES GAG | | | SCAC4 |
| 21 | ATGI | ALEC TRUCKING CO INC | | | SCAC3 |
| 22 | ATGI | AMIGO TRUCKING & GOODE CONSTRUCTION | | | SCAC4 |
| 23 | ATGJ | ALLMAN TRUCKING | | | SCAC3 |
| 24 | ATGK | A T TRUCKING & LEASING CO OF NEW YO | | | SCAC3 |
| 25 | ATGK | ATLANTIC CARGO INC | | | SCAC4 |
| 26 | ATGL | A T F TRUCKING LLC (N/K/A GREATWIDE | | | SCAC4 |
| 27 | ATGM | AMERICAN TRADING AND PRODUCTION COR | | | SCAC3 |
| 28 | ATGM | AMERICAN GUARDIAN PROTECTION INC | | | SCAC4 |
| 29 | ATGM | Arriva TGM (Tellings-Golden Miller) | | GB | TRAFFIC |
| 30 | ATGN | ABC TRUCKING CO | | | SCAC3 |
| 31 | ATGN | A-TEC SIGNS (DIV OF ERIK JEPPESEN H | | | SCAC4 |
| 32 | ATGO | ASG TRUCKING | | | SCAC4 |
| 33 | ATGP | ATLANTIC GRAPHIC SERVICE INC | | | SCAC3 |
| 34 | ATGP | ATG | | | SCAC4 |
| 35 | ATGQ | ACTIVE TRUCKING SERVICE | | | SCAC3 |
| 36 | ATGQ | A2Z TRANSPORT | | | SCAC4 |
| 37 | ATGRV | ATELIERELE CFR GRIVITA SA | | RO | VKM |
| 38 | ATGS | ATLAS TUG SERVICE | | | SCAC3 |
| 39 | ATGS | ALLTRANS LOGISTICS INC | | | SCAC4 |
| 40 | ATGU | BURLINGTON NORTHERN AND SANTA FE RAILROAD | | | PWRC |
| 41 | ATGU | BNSF Railway | | | RSRV |
| 42 | ATGU | BURLINGTON NORTHERN RAILROAD | | | SCAC3 |
| 43 | ATGU | ASIA TECHNICAL GAS CO (PTE) LTD | | | SCAC4 |
| 44 | ATGV | A TOWING | | | SCAC3 |
| 45 | ATGX | ATEL Leasing Corp. | added 10/1996; 7/2000-7/2005 | | NAKINA |
| 46 | ATGX | Aurelius-Thomas Gasoline Co. | 8/1920-7/1923 | | NAKINA |
| 47 | ATGX | ATEL Leasing Corp. | added 10/96; 7/2000 | | NRHS |
| 48 | ATGX | *AURELIUS-THOMAS GASOLINE CO. | | | PWRC |
| 49 | ATGX | +ATEL LEASING CORP. | | | PWRC |
| 50 | ATGX | ATEL Leasing Corporation | | | RSRV |
| 51 | ATGX | ATEL LEASING CORPORATION | | | SCAC4 |
| 52 | ATGY | AAA TRAVEL AGENCY | | | SCAC3 |
| 53 | ATGY | AGRICULTURE TECHNOLOGY INCORPORATED | | | SCAC4 |
