| 1 | MRE | Namibia Commercial Aviation (Pty) Ltd. | Callsign: Med Rescue, | NAM | AVCODES |
| 2 | MRE | Namibia Commerical Aviation | | | ICAO1 |
| 3 | MRE | Merseyrail Electrics 2002 Ltd | | UK | VKM |
| 4 | MREA | MAROL EXPRESS INC | | | SCAC4 |
| 5 | MREB | MARTELL TRUCKING | | | SCAC4 |
| 6 | MRED | MR EDS ENTERPRISES | | | SCAC4 |
| 7 | MREG | MESMER REFRIGERATION | | | SCAC4 |
| 8 | MREH | MARSHA | | | SCAC4 |
| 9 | MREJ | MID-ATLANTIC DISTRIBUTION CENTER | | | SCAC4 |
| 10 | MREK | MARTIN, E K & SONS INC | | | SCAC4 |
| 11 | MREN | MORALES EXPRESS TRUCK | | | SCAC4 |
| 12 | MREO | MAESTRO REEFERS LTD | | | SCAC4 |
| 13 | MREP | MANON RODRIGUEZ, EDGAR GERARDO | | | SCAC4 |
| 14 | MREQ | MORA ROMERO, ENRIQUE | | | SCAC4 |
| 15 | MRER | MAPLE ROAD EXPRESS LTD | | | SCAC4 |
| 16 | MRES | MATRIX EXPEDITED SERVICE | | | SCAC4 |
| 17 | MRET | MARATHON EQUIPMENT INC | | | SCAC4 |
| 18 | MREU | MARITIME RENTAL SERVICES LLC | | USA | BIC |
| 19 | MREX | Monad Railway Equipment Co. | 7/2000-7/2005 (not listed) | | NAKINA |
| 20 | MREX | Marshall Railway Equipment Corp. | added 7/1956; 10/1957-1/1980; eliminated 10/1987 | | NAKINA |
| 21 | MREX | Monad Railway Equipment Co. | Jul-00 | | NRHS |
| 22 | MREX | Marshall Railway Equipment Corp. | added 7/56; 10/57-1/80; eliminated 10/87 | | NRHS |
| 23 | MREX | MONAD RAILWAY EQUIPMENT COMPANY [MARSHALL RAILWAY EQUIPMENT CORP.] | | | PWRC |
| 24 | MREX | Marshall Railway Equipment Corporation (Monad Railway Equipment) | | | RSRV |
| 25 | MREY | MONTERREY IMPORTS | | | SCAC4 |
| 26 | MREZ | MILK RIVER ELEVATOR | | | PWRC |
