| 1 | RMG | Rumugu Air & space Nigeria Limited | Callsign: Rumugu Air, | WAN | AVCODES |
| 2 | RMG | Rumugu Air & Space Nigeria | | | ICAO1 |
| 3 | RMGB | RMGC ASSOCIATES LLC | | | SCAC4 |
| 4 | RMGE | RED MAPLE GIANT INDUSTRIAL | | | SCAC4 |
| 5 | RMGF | REMINGTON FREIGHT SERVICES | | | SCAC3 |
| 6 | RMGH | RAMADA LOGISTICS LTD | | | SCAC4 |
| 7 | RMGM | RODRIGUEZ MONSALVE, GUILLERMO ISAIA | | | SCAC4 |
| 8 | RMGQ | REDSTONE MEDIA GROUP INC | | | SCAC4 |
| 9 | RMGS | ROLLINS MOVING SYSTEMS | | | SCAC3 |
| 10 | RMGU | RESOLVE MARINE GROUP, INC. | | USA | BIC |
| 11 | RMGW | ROULETTE MANAGEMENT SERVICES LLC | | | SCAC4 |
| 12 | RMGX | The Andersons-Rail Group | added 10/2004; 7/2005 | | NAKINA |
| 13 | RMGX | Railcar, Ltd. | added 10/1989; 1/1994-7/2000; eliminated 10/2004 | | NAKINA |
| 14 | RMGX | Railcar, Ltd. | added 10/89; 1/94-7/2000 | | NRHS |
| 15 | RMGX | THE ANDERSONS-RAIL GROUP [RAILCAR LIMITED] | | | PWRC |
| 16 | RMGX | Railcar Limited | | | RSRV |
| 17 | RMGX | ANDERSONS INC, THE | | | SCAC4 |
| 18 | RMGY | RMG FAMILY SUGAR BUSH | | | SCAC4 |
