| 1 | GUA | Aerotaxis de Aguascalientes, S.A. de C.V. | Callsign: Aguascalientes, | MEX | AVCODES |
| 2 | GUA | Aerotaxis de Aguascalientes | | | ICAO1 |
| 3 | GUA | | City: Guadalajara | MEX | TRAFFIC |
| 4 | GUAD | GUARDIAN MOVING AND STORAGE | | | SCAC4 |
| 5 | GUAF | GUARANTEED AIR FREIGHT FORWARDING, INC | | | SCAC1 |
| 6 | GUAN | GUANGDONG ETERNAL WAY INTL FREIGHT | | | SCAC4 |
| 7 | GUANG | Guangzhou Metro | | PRC | TRAFFIC |
| 8 | GUAQ | GUARRIELLO TRUCKING LLC | | | SCAC4 |
| 9 | GUAV | GUAVA EXPRESS INC | | | SCAC4 |
| 10 | GUAX | Georgia Power Co. | added 10/1982; 1/1994; eliminated 10/1999; 7/2000 (not listed); added 10/2000; 7/2005 | | NAKINA |
| 11 | GUAX | Georgia Power Co. | added 10/82; 1/94; eliminated 10/99; 7/2000; added 10/2000 | | NRHS |
| 12 | GUAX | GEORGIA POWER COMPANY | | | PWRC |
| 13 | GUAX | Georgia Power | | | RSRV |
| 14 | GUAX | GEORGIA POWER COMPANY | | | SCAC4 |
| 15 | GUAY | GUAY, L P (1987) INC | | | SCAC4 |
