| 1 | GBX | GB Airlink, Inc. | Callsign: Island Tiger, ICAO Callsign changed to Gee Bee Link | USA | AVCODES |
| 2 | GBX | GB Airlink, Inc. | Callsign: Gee Bee Link, ICAO Callsign changed from Island Tiger | USA | AVCODES |
| 3 | GBX | GB Airlink | | | ICAO1 |
| 4 | GBX | Goetz Brewing Co. | 7/1935 | | NAKINA |
| 5 | GBXB | GLOBAL TRANSPORTBZ | | | SCAC4 |
| 6 | GBXC | GB TRANSPORT INC | | | SCAC4 |
| 7 | GBXD | GLOBAL EX TRANSPORT LTD | | | SCAC4 |
| 8 | GBXEU | WAGONY ŚWIDNICA S.A. | | PL | VKM |
| 9 | GBXF | GLOBE TRANSPORT | | | SCAC4 |
| 10 | GBXG | GLOBAL TRANSPORTATION & LOGISTICS L | | | SCAC4 |
| 11 | GBXI | GILBERT EXPRESS INC | | | SCAC4 |
| 12 | GBXM | GLOBUS TRANSPORT INC | | | SCAC4 |
| 13 | GBXO | GLOBAL TRANSPORTERS | | | SCAC4 |
| 14 | GBXQ | GILBERT TRANSPORT | | | SCAC4 |
