| 1 | GTC | Golden International Airlines | Callsign: Golden Wings, 20 December 2005. Ceased opertions in 2007. | TR | AVCODES |
| 2 | GTC | Altin Havayolu Tasimaciligi Turizm Ve Ticaret | | | ICAO1 |
| 3 | GTC | Gulf Transport | 1/1975-1/1980 | | NAKINA |
| 4 | GTC | Gulf Transport | 1/75-1/80 | | NRHS |
| 5 | GTC | GULF TRANSPORT | | | PWRC |
| 6 | GTC | Gulf Transport | | | RSRV |
| 7 | GTCC | G & T TRUCKING INC | | | SCAC4 |
| 8 | GTCD | GOLD PRIORITY TRANSPORTATION | | | SCAC4 |
| 9 | GTCE | G T CARRIERS LTD | | | SCAC4 |
| 10 | GTCH | GREAT ALBERTA TRANSPORT LTD | | | SCAC4 |
| 11 | GTCI | GUSKI TRUCKING CO INC | | | SCAC4 |
| 12 | GTCK | GRAFF TRUCKING COMPANY, INC | | | SCAC1 |
| 13 | GTCL | GERMANY TANK CONTAINER LEASING GMBH | | | PWRC |
| 14 | GTCL | GENERAL TRANSPORT & CONSULTANTS INC | | | SCAC4 |
| 15 | GTCN | GROSA TRUCKING | | | SCAC4 |
| 16 | GTCR | GMT LOGISTICS LLC | | | SCAC4 |
| 17 | GTCS | GREAT CANADIAN STAMP COMPANY INC, T | | | SCAC4 |
| 18 | GTCU | GLOBAL TRADE CONTAINERS, LLC | | USA | BIC |
| 19 | GTCV | GUTIERREZ TRUCKING (MX-596227) | | | SCAC4 |
| 20 | GTCX | Westland Oil Co. | 1/1950 (not listed) | | NAKINA |
| 21 | GTCX | WESTLAND OIL CO. | | | PWRC |
| 22 | GTCX | GHOST TOWN & CAIRO | | | PWRC |
