| 1 | GLN | Air Gulf Falcon PTY Ltd. | IATA: QL, Callsign: Gulfalcon, Ceased operations. Designator QL recalled by IATA | SD | AVCODES |
| 2 | GLN | GCS Air Service | Callsign: Galion, | USA | AVCODES |
| 3 | GLNB | G-LINE EXPRESS | | | SCAC4 |
| 4 | GLND | GLENN DISTRIBUTOR INC | | | SCAC4 |
| 5 | GLNF | GLENCAL FARMS | | | SCAC4 |
| 6 | GLNI | GLT TRANSPORTATION INC | | | SCAC4 |
| 7 | GLNJ | GOLD LION TRANSPORTATION LLC | | | SCAC4 |
| 8 | GLNL | GLENN-LEE TRUCKING INC. | | | SCAC4 |
| 9 | GLNO | GALLANO TRUCKING INC | | | SCAC4 |
| 10 | GLNQ | GOLDLINE | | | SCAC4 |
| 11 | GLNR | GILLSON TRUCKING MISSION (BC) LTD | | | SCAC4 |
| 12 | GLNT | GLENDALE CARRIERS CORP | | | SCAC4 |
| 13 | GLNU | Bechtel International | | | RSRV |
| 14 | GLNX | GLNX Corp. | added 1/1981; 1/1994-7/2005 | | NAKINA |
| 15 | GLNX | Glenco Transportation Services, Inc. | added 1/1976; 1/1980; eliminated 1/1981 | | NAKINA |
| 16 | GLNX | Glenco Transportation Services, Inc. | 1/80; eliminated 1/81 | | NRHS |
| 17 | GLNX | GLNX Corp. | added 1/81; 1/94-7/2000 | | NRHS |
| 18 | GLNX | GLNX CORPORATION [GLENCO TRANSPORTATION SERVICES, INC.] | | | PWRC |
| 19 | GLNX | GLNX Corporation | | | RSRV |
| 20 | GLNX | GLNX CORPORATION | | | SCAC4 |
| 21 | GLNY | GUILD LINES CORP | | | SCAC4 |
