| 1 | GBT | Gold Belt Air Transport, Inc. | Callsign: Goldbelt, | CDN | AVCODES |
| 2 | GBT | A-Jet Aviation Aircraft Management GmbH | Callsign: Globetrotter, Ceased operations. ICAO designator changed from XXA. | A | AVCODES |
| 3 | GBT | Gold Belt Air Transport | | | ICAO1 |
| 4 | GBTC | GABY TRADING INC | | | SCAC4 |
| 5 | GBTH | GALBRAITH, JAMES & SONS | | | SCAC1 |
| 6 | GBTI | GLB TRUCKING LLC | | | SCAC4 |
| 7 | GBTJ | GLOBAL TRANSPORTATION SERVICES INC | | | SCAC4 |
| 8 | GBTK | GOLDEN BAY TRUCKING | | | SCAC4 |
| 9 | GBTL | G & B TRANSPORTATION LTD | | | SCAC4 |
| 10 | GBTM | GLORY BOUND TRUCKING | | | SCAC4 |
| 11 | GBTO | GIESBRECHT, NORMAN | | | SCAC4 |
| 12 | GBTP | G & B TRANSPORT LTD | | | SCAC4 |
| 13 | GBTQ | GLOBAL TRANSPORTATION SOLUTIONS | | | SCAC4 |
| 14 | GBTT | GLOBAL TRANSPORTATION USA | | | SCAC4 |
| 15 | GBTU | GUIDO BERNARDINI SRL | | I | BIC |
| 16 | GBTX | GBTX LEASING, LLC | | | PWRC |
| 17 | GBTX | GBTX LEASING LLC | | | SCAC4 |
| 18 | GBTY | GBTI INC | | | SCAC4 |
