| 1 | AGM | Air Guam | Callsign: Air Guam, | GUM | AVCODES |
| 2 | AGM | Aviation West Charters | Callsign: Angel Med, | USA | AVCODES |
| 3 | AGM | Air Guam | | | ICAO1 |
| 4 | AGM | ALABAMA MARBLE, DIV. OF GEORGIA MARBLE | | | PWRC |
| 5 | AGMC | AMALGAMATED TRANSPORT SYSTEM INC | | | SCAC4 |
| 6 | AGMD | ANGUS, M D & ASSOCIATES LTD | | | SCAC4 |
| 7 | AGMF | AGGRESSIVE MANUFACTURING CO | | | SCAC3 |
| 8 | AGMG | ARMADA GRAIN COMPANY | | | SCAC4 |
| 9 | AGMH | AGRICOLA GUZMAN | | | SCAC4 |
| 10 | AGMI | ASBURY GRAPHITE MILLS INC, THE | | | SCAC3 |
| 11 | AGMI | AGUILERA MEDRANO Y CIA SC | | | SCAC4 |
| 12 | AGMK | AGMARK FOODS INC | | | SCAC4 |
| 13 | AGML | AUDET, GERMAIN & LISANNE LAPOINT | | | SCAC4 |
| 14 | AGMM | AGM IMPORTS | | | SCAC4 |
| 15 | AGMN | AGROMARINOS S A DE C V | | | SCAC4 |
| 16 | AGMO | AGEE MOTOR FREIGHT, INC | | | SCAC3 |
| 17 | AGMP | A G M TRANSPORT INC | | | SCAC4 |
| 18 | AGMR | ANGLO-EASTERN MANAGEMENT GROUP LIMI | | | SCAC4 |
| 19 | AGMS | AGILE MESSENGER SERVICE INC | | | SCAC3 |
| 20 | AGMT | ATLANTIC GULF MARINE TRANSPORT | | | SCAC3 |
| 21 | AGMT | ADVANTAGE MOVING AND STORAGE | | | SCAC4 |
| 22 | AGMU | AGMARK CAPITAL HOLDINGS INC. | | USA | BIC |
| 23 | AGMU | Agmark Capital Holdings | | | RSRV |
| 24 | AGMU | AMERICAN GULF SHIPPING | | | SCAC3 |
| 25 | AGMU | AGMARK FOOD INC | | | SCAC4 |
| 26 | AGMW | AGM EXPRESS NOW INC | | | SCAC4 |
| 27 | AGMX | Terra Nitrogen Limited Partnership | added 10/1996; 7/2000-7/2005 | | NAKINA |
| 28 | AGMX | Agricultural Minerals L.P. | added 1/1995; eliminated 10/1996 | | NAKINA |
| 29 | AGMX | Amalgamated Sugar Co. | added 7/1964; 7/1965-1/1975; eliminated 4/1977 | | NAKINA |
| 30 | AGMX | Amalgamated Sugar Co. | added 7/64; 7/65-1/75 | | NRHS |
| 31 | AGMX | Agricultural Minerals L.P. | added 1/95; eliminated 10/96 | | NRHS |
| 32 | AGMX | Terra Nitrogen Limited Partnership | added 10/96; 7/2000 | | NRHS |
| 33 | AGMX | *AMALGAMATED SUGAR CO. | | | PWRC |
| 34 | AGMX | *AGRICULTURAL MINERALS LP | | | PWRC |
| 35 | AGMX | +TERRA NITROGEN LP | | | PWRC |
| 36 | AGMX | Amalgamated Sugar (Terra Nitrogen) | | | RSRV |
| 37 | AGMX | AMALGAMATED SUGAR CO THE | | | SCAC3 |
| 38 | AGMZ | AG MAX CORPORATION | | | PWRC |