| 1 | MRG | Manag'Air | Callsign: Manag'Air, Ceased operations. | F | AVCODES |
| 2 | MRG | Martin Rose Gleisbau | | DE | VKM |
| 3 | MRGA | MORAGA BRACAMONTES, JOSE ALBERTO | | | SCAC4 |
| 4 | MRGB | MARGOSIAN TRUCKING | | | SCAC4 |
| 5 | MRGG | MARTIN, GREG LLC | | | SCAC4 |
| 6 | MRGH | MOR-AGRA GRAIN HANDLING INC | | | SCAC4 |
| 7 | MRGI | MGI OF CHICAGO | | | SCAC1 |
| 8 | MRGI | MR L L LOGISTICS | | | SCAC4 |
| 9 | MRGJ | MRG TRANSPORT INCORPORATED | | | SCAC4 |
| 10 | MRGL | MANOR, GLEN GALLERIES | | | SCAC4 |
| 11 | MRGM | MIRSA GROUP LLC | | | SCAC4 |
| 12 | MRGN | MORGA TRANSPORT | | | SCAC4 |
| 13 | MRGP | MARTIN TRANSPORT INC | | | SCAC4 |
| 14 | MRGQ | MERGENTHALER TRANSFER & STORAGE COMPANY | | | SCAC1 |
| 15 | MRGQ | MERGENTHALER TRANSFER & STORAGE CO | | | SCAC4 |
| 16 | MRGS | MIRAGE TRANSPORT INC | | | SCAC4 |
| 17 | MRGT | MORGAN TRUCKING CO | | | SCAC4 |
| 18 | MRGU | MARGUISA SHIPPING LINES | | E | BIC |
| 19 | MRGV | MOMENTUM RACE GROUP LLC | | | SCAC4 |
| 20 | MRGW | MT TRUCKING | | | SCAC4 |
| 21 | MRGY | MERCER, GARRY TRUCKING INC | | | SCAC4 |
