| 1 | GEM | Bristol BAe | Callsign: Sapphire, | GB | AVCODES |
| 2 | GEM | Air Africa International Ltd. | | EAT | AVCODES |
| 3 | GEM | Gemenci kisvasút | | H | TRAFFIC |
| 4 | GEMA | GEMA EXPRESS SA DE CV | | | SCAC4 |
| 5 | GEMB | GOLLOTTE, M TRUCKING | | | SCAC4 |
| 6 | GEME | GEMM ENTERPRISES | | | SCAC4 |
| 7 | GEMG | GOLDEN EAGLE MOVING SERVICES INCORP | | | SCAC4 |
| 8 | GEMH | GODAM EXPRESS | | | SCAC4 |
| 9 | GEMI | GEMINI GROUP TRANSPORT LLC | | | SCAC4 |
| 10 | GEMJ | G E MOBILE WATER INC | | | SCAC4 |
| 11 | GEMN | GREEN MOUNTAIN TRANSPORTATION INC | | | SCAC4 |
| 12 | GEMO | GEM TRUCKING LLC | | | SCAC4 |
| 13 | GEMP | GEMINI MOTOR TRANSPORT LP | | | SCAC4 |
| 14 | GEMQ | GAC ENERGY & MARINE SERVICES LLC | | | SCAC4 |
| 15 | GEMR | G E M TRUCKING INC | | | SCAC4 |
| 16 | GEMS | GEMINI TRANSPORT LLC | | | SCAC4 |
| 17 | GEMV | Gemenc Volán | | H | TRAFFIC |
| 18 | GEMX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 19 | GEMX | General Electric Railcar Services Corp. | added 1/1999; eliminated 1/2000 | | NAKINA |
| 20 | GEMX | General Electric Railcar Services Corp. | added 1/99; eliminated 1/2000 | | NRHS |
| 21 | GEMX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 22 | GEMX | GE RAIL SERVICES | | | PWRC |
| 23 | GEMX | GE Rail Services | | | RSRV |
| 24 | GEMX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
