| 1 | GCW | Global Air Crew A/S | Callsign: Globalcrew, Name changed to FlyGAC A/S. | DK | AVCODES |
| 2 | GCW | flyGAC A/S | Callsign: Globalcrew, Name changed from Global Air Crew A/S. | DK | AVCODES |
| 3 | GCW | Garden City Western Ry. Co. | 7/1923-1/1980; eliminated 7/1986; eliminated 7/1989; 1/1994-7/2005 | | NAKINA |
| 4 | GCW | Garden City Western Ry. Co. | 4/38-1/80; eliminated 7/86; eliminated 7/89; 1/94-7/2000 | | NRHS |
| 5 | GCW | GARDEN CITY WESTERN RAILWAY COMPANY | | | PWRC |
| 6 | GCW | Garden City Western Railway | | | RSRV |
| 7 | GCWD | GENERAL COMMODITIES WAREHOUSE&DISTRIBUTING COMPANY, L.P | | | SCAC1 |
| 8 | GCWE | G C W EXPRESS | | | SCAC4 |
| 9 | GCWF | GRYSIUK, CALVIN W F | | | SCAC4 |
| 10 | GCWG | GRACE TWO (2) GRACE TOWING | | | SCAC4 |
