| 1 | AGT | Amadeus Global Travel Distribution, S.A. | IATA: 1A, Changed from Amadeus Marketing S.A. Name changed to Amadeus IT Group SA. Computer Reservation System | E | AVCODES |
| 2 | AGT | Amadeus Marketing, S.A. | IATA: 1A, Changed to Amadeus Global Travel Distribution S.A. Computer Reservation System | E | AVCODES |
| 3 | AGT | Amadeus IT Group SA. | IATA: 1A, Callsign: Amadeus, Changed from Amadeus Marketing S.A. Name changed from Amadeus Global Travel Distribution, S.A. Computer Reservation System | E | AVCODES |
| 4 | AGT | Amadeus Global Travel Distribution | IATA: 1A | | ICAO1 |
| 5 | AGT | Allgemeine Gleis- und Tiefbau- Bauunternehmung GmbH | | DE | VKM |
| 6 | AGTA | AMERICAN GENERAL TRANSPORT LLC | | | SCAC4 |
| 7 | AGTB | AMERICAN GRAIN TRIMMERS INCORPORATE | | | SCAC3 |
| 8 | AGTB | AGROINDUSTRIAS TOMBELL S A DE C V | | | SCAC4 |
| 9 | AGTC | ANGELINA TRUCKING COMPANY | | | SCAC3 |
| 10 | AGTC | ATG TRANSPORTATION LLC | | | SCAC4 |
| 11 | AGTE | AGI TRANSPORT INC | | | SCAC4 |
| 12 | AGTF | ARGUS TRANSFER & STORAGE INC | | | SCAC3 |
| 13 | AGTF | ARGUS TRANSFER & STORAGE INC | | | SCAC4 |
| 14 | AGTG | AG TRUCKING INC | | | SCAC3 |
| 15 | AGTH | ANDERSON, GARITH R TRUCKING INC | | | SCAC3 |
| 16 | AGTH | ANDERSON, GARITH R TRUCKING INC | | | SCAC4 |
| 17 | AGTI | AUGIES TRUCKING SERVICE | | | SCAC3 |
| 18 | AGTJ | AGRI-TEL TRANSPORTATION INC | | | SCAC4 |
| 19 | AGTK | APEX GW TRUCKING CORP | | | SCAC4 |
| 20 | AGTM | ALL GIRLS TRUCKING INC | | | SCAC4 |
| 21 | AGTN | AGRI TRANSPORT INC | | | SCAC3 |
| 22 | AGTN | AGRI-TRANS | | | SCAC4 |
| 23 | AGTO | AGRUTTO CARTAGE INC | | | SCAC3 |
| 24 | AGTQ | ALL GOOD TERMINAL WAREHOUSE | | | SCAC3 |
| 25 | AGTQ | AGUILERA TRANSFER | | | SCAC4 |
| 26 | AGTR | A & G TRANSPORT INC | | | SCAC3 |
| 27 | AGTS | AGRI-TECH SERVICE INC | | | SCAC3 |
| 28 | AGTS | AGRI TECH SERVICE INC | | | SCAC4 |
| 29 | AGTT | AGENTS TRANSPORT | | | SCAC3 |
| 30 | AGTU | AQUA GULF TRANSPORT INC. | | | SCAC3 |
| 31 | AGTU | AQUA GULF TRANSPORT INC | | | SCAC4 |
| 32 | AGTV | AG TRANSPORTATION & MARKETING INC | | | SCAC3 |
| 33 | AGTV | AGRI TRANS SERVICES | | | SCAC4 |
| 34 | AGTW | AUGUSTA TOWING CO INC | | | SCAC3 |
| 35 | AGTW | ARMSTRONG TRANSPORTATION & TRAILERS | | | SCAC4 |
| 36 | AGTX | AmeriGas Propane L.P. | added 10/1996; eliminated 7/1999 | | NAKINA |
| 37 | AGTX | Anderson & Gustafson, Inc. (C.A. Gufstafson Co., Inc.) | 7/1923 | | NAKINA |
| 38 | AGTX | Anderson & Gustafson, Inc. | 8/1920 | | NAKINA |
| 39 | AGTX | AmeriGas Propane L.P. | added 10/96; eliminated 7/99 | | NRHS |
| 40 | AGTX | *ANDERSON & GUSTAFSON, INC. (C. A. GUFTAFSON CO., INC.) | | | PWRC |
| 41 | AGTX | *AMERIGAS PROPANE LP | | | PWRC |
| 42 | AGTY | ANDERSEN GRAIN & TRUCKING CO | | | SCAC3 |
| 43 | AGTY | AG TRANSPORT SERVICE | | | SCAC4 |
