| 1 | GRG | Trans Air Georgia | IATA: 5I, IATA Prefix: 936, Name changed to Air G | GE | AVCODES |
| 2 | GRG | Air G | IATA: 5I, IATA Prefix: 936, Designator 5I recalled by IATA. Name changed from Trans Air Georgia | GE | AVCODES |
| 3 | GRG | Air Georgia | IATA: DA | | ICAO1 |
| 4 | GRG | Global Rail Groupe | | FAN | TRAFFIC |
| 5 | GRGB | GEORGALLAS, JOHN BANANA DISTRIBUTOR | | | SCAC4 |
| 6 | GRGD | GREEN RANGER DELIVERY SERVICE INC | | | SCAC4 |
| 7 | GRGE | GARCIA GUERRERO, JUAN ANGEL | | | SCAC4 |
| 8 | GRGG | GRAND GOURMET | | | SCAC4 |
| 9 | GRGI | CARTONS RIGGING INC | | | SCAC3 |
| 10 | GRGJ | GONZALEZ RODRIGUEZ, JAVIER | | | SCAC4 |
| 11 | GRGK | GARRETT TRUCKING SERVICES LLC | | | SCAC4 |
| 12 | GRGL | GARCIA BURRUEL, GUADALUPE | | | SCAC4 |
| 13 | GRGM | GRIGGS, N M COMPANY | | | SCAC4 |
| 14 | GRGN | GLOBAL RIGGING & TRANSPORT CANADA C | | | SCAC4 |
| 15 | GRGO | GIORGIO FOODS XPRESS LLC | | | SCAC4 |
| 16 | GRGP | GARCIA REYES, GUADALUPE | | | SCAC4 |
| 17 | GRGQ | GORDITOS TRANSPORT | | | SCAC4 |
| 18 | GRGS | GREGORY LOGISTICS INC | | | SCAC4 |
| 19 | GRGV | GENOA RACING CORP | | | SCAC4 |
| 20 | GRGY | GOLDEN OCEAN GROUP LIMITED | | | SCAC4 |
| 21 | GRGZ | GRAND GRIT | | | PWRC |
