| 1 | MWM | Modern Transporte Aereo De Carga S.A. d/b/a Modern Logistics | IATA: WD, Callsign: Modernair, IATA Prefix: 372, | BR | AVCODES |
| 2 | MWMC | MIDWEST MOTOR COACH | | | SCAC4 |
| 3 | MWML | MOUNTAIN WEST MILK TRANSPORT INC. | | | SCAC4 |
| 4 | MWMS | MID WEST MOTOR SERVICE COMPANY OF ILLINOIS, INC | | | SCAC1 |
| 5 | MWMS | MID WEST MOTOR SERVICE COMPANY OF I | | | SCAC4 |
| 6 | MWMU | MAERSK A/S | | DK | BIC |
| 7 | MWMU | A P MOLLER | | | SCAC4 |
| 8 | MWMX | Golden Leasing | added 7/1985; 1/1994-7/2005; eliminated 1/2008 | | NAKINA |
| 9 | MWMX | Mid-West Mud Co., Inc. | added 1/1978; 1/1980; eliminated 4/1985 | | NAKINA |
| 10 | MWMX | Mid-West Mineral Products, Inc. | added 7/1969; 4/1970; eliminated 10/1971 | | NAKINA |
| 11 | MWMX | Mid-West Mineral Products, Inc. | added 7/69; 4/70; eliminated 10/71 | | NRHS |
| 12 | MWMX | Mid-West Mud Co., Inc. | added 1/78; 1/80; eliminated 4/85 | | NRHS |
| 13 | MWMX | Golden Leasing | 1/94-7/2000 | | NRHS |
| 14 | MWMX | GOLDEN LEASING (MIDWEST MUD COMPANY, INC. {MID-WEST MINERAL PRODUCTS, INC.]) | | | PWRC |
| 15 | MWMX | Midwest Mud (Golden Leasing) | | | RSRV |
| 16 | MWMX | GOLDEN LEASING | | | SCAC4 |
