| 1 | ATA | Air Transport Association of America (ATA) | IATA: XD, Non-airline org. relating to the airline industry | USA | AVCODES |
| 2 | ATA | Aerocondor Transportes Aereos Lda. | IATA: 2B, IATA Prefix: 088, ICAO designator changed to ARD | P | AVCODES |
| 3 | ATA | Universal Air Travel Plan (UATP) | IATA: XD, Non-airline org. relating ti the airline industry | USA | AVCODES |
| 4 | ATA | Air Transport Association | | | ICAO1 |
| 5 | ATA | ATA KARBON MADEN NAKLİYAT DEMİRYOLU TAŞIMACILIĞI VE IŞLETMECİLİĞİ BAKIM ONARIM VE LOJİSTİK HİZMETLERİ GIDA İNŞAAT DIŞ TİCARET LİMİTED ŞİRKETİ | | TR | VKM |
| 6 | ATAA | ATAUDES DE LA FRONTERA SA DE CV | | | SCAC4 |
| 7 | ATAB | AMERICAN TOURS/AMERICAN SPORTSMAN G | | | SCAC3 |
| 8 | ATAB | A-Train AB | | SE | VKM |
| 9 | ATAC | AUTO TRUCK TRANSPORT OF CANADA INC | | | SCAC3 |
| 10 | ATAC | ALPHA TANK CLEANING INC | | | SCAC4 |
| 11 | ATAC | | City: Roma | I | TRAFFIC |
| 12 | ATAD | AUTOTRANSPORTES ADECSA SA DE CV | | | SCAC4 |
| 13 | ATAF | ALLIED TRANSCONTINENTAL FORWARDING | | | SCAC3 |
| 14 | ATAF | Azienda Trasporti dell'Area Fiorentina | City: Firenze | I | TRAFFIC |
| 15 | ATAG | AUSTIN TRANSPORTATION INC | | | SCAC3 |
| 16 | ATAG | ATLANTIC COURIER & CARTAGE LTD | | | SCAC4 |
| 17 | ATAH | AMERICAN TARA CORPORATION | | | SCAC3 |
| 18 | ATAJ | AUTO TRANSPORT AMERICA INC | | | SCAC3 |
| 19 | ATAK | ALLTRANS ALASKA TRUCKLINES INC | | | SCAC3 |
| 20 | ATAL | AUTO TRANSPORTES ALANIS S A DE C V | | | SCAC4 |
| 21 | ATAM | A TRIPLE A MOVING & STORAGE CO | | | SCAC3 |
| 22 | ATAM | ATALMAR LIMITED | | | SCAC4 |
| 23 | ATAN | | City: Napoli | I | TRAFFIC |
| 24 | ATAO | ATC LOGISTICS INC | | | SCAC4 |
| 25 | ATAP | AUTO TRANSPORTE APORTELA | | | SCAC4 |
| 26 | ATAQ | ARCTIC TRAVELER (CANADA) LTD | | | SCAC4 |
| 27 | ATAR | ADAMS TRANSPORTATION LLC | | | SCAC4 |
| 28 | ATAS | ANGELIC TOURS AND SHUTTLES INC | | | SCAC4 |
| 29 | ATAT | ALLEN TRUCK & TRAILER LEASING INC | | | SCAC3 |
| 30 | ATAU | AMATO TRANSPORTS AFFRETEMENT | | F | BIC |
| 31 | ATAU | ATLAS INTERMODAL TRANSPORT CO., LTD | | | SCAC3 |
| 32 | ATAW | ANACONDA TRANSPORTATION & AMWAY TRA | | | SCAC3 |
| 33 | ATAW | ATELIER WELMO S E N C | | | SCAC4 |
| 34 | ATAX | Arizona Transit Assembly | 7/2005 (not listed) | | NAKINA |
| 35 | ATAX | *ALAMEDA CORRIDOR TRANSPORTATION AUTHORITY | | | PWRC |
| 36 | ATAX | +ARIZONA TRANSIT ASSEMBLY | | | PWRC |
| 37 | ATAX | Arizona Transit Assembly (Alameda Corridor Transportation Authority) | | | RSRV |
| 38 | ATAX | ARIZONA TRANSIT ASSEMBLY | | | SCAC4 |
| 39 | ATAY | ATA TRANSPORTATION INC | | | SCAC3 |
