| 1 | GBS | Global Air Servies Nigeria Ltd. | Callsign: Global Serve, | WAN | AVCODES |
| 2 | GBS | Global Air Services Nigeria | | | ICAO1 |
| 3 | GBS | Gürbetal-Bern-Schwarzenburg-Bahn | | CH | TRAFFIC |
| 4 | GBS | Gleisbau Sabrodt GmbH | | DE | VKM |
| 5 | GBSC | GILBERTS SERVICE OIL CO INC | | | SCAC4 |
| 6 | GBSD | GOVERNOR BUSINESS SOLUTIONS | | | SCAC4 |
| 7 | GBSE | GILBERTSON ENTERPRISES LTD | | | SCAC4 |
| 8 | GBSH | GLOBAL SHIPPING | | | SCAC4 |
| 9 | GBSJ | GBS & SONS FREIGHT INC | | | SCAC4 |
| 10 | GBSL | GLOBAL STAR TRANSPORT | | | SCAC4 |
| 11 | GBSM | GIUSEPPE BOTTIGLIERI SHIPPING COMPA | | | SCAC4 |
| 12 | GBSN | GLOBAL SHIPMANAGEMENT | | | SCAC4 |
| 13 | GBSO | GIBSON WELDING LTD | | | SCAC4 |
| 14 | GBSR | GLOBAL SHIPPING SERVICES LLC | | | SCAC4 |
| 15 | GBSS | GLOBAL SERVICE ASSOCIATES | | | SCAC4 |
| 16 | GBST | G B S & SONS TRUCKING LTD | | | SCAC4 |
| 17 | GBSU | MOMENTIVE PERFORMANCE MATERIALS GMBH | | D | BIC |
| 18 | GBSU | GE BAYER SILICONES GMBH & CO KG | | | SCAC4 |
| 19 | GBSV | GARCIA BENAVIDES, SERGIO ROLANDO | | | SCAC4 |
| 20 | GBSX | Great Bear Spring Co. | 7/1935-7/1954; eliminated 10/1957 | | NAKINA |
| 21 | GBSX | Great Bear Spring Co. | 4/38-1/52; eliminated 10/57 | | NRHS |
| 22 | GBSX | GREAT BEAR SPRING CO. | | | PWRC |
| 23 | GBSY | GENERAL BIODIESEL SEATTLE LLC | | | SCAC4 |
