| 1 | MWG | Maswings Sdn Bhd | IATA: 7B, Callsign: Maswings, Designator 7B recalled by IATA. Now using Malaysia Airlines IATA Code MH. | MAL | AVCODES |
| 2 | MWG | Maswings Sdn Bhd | IATA: MY, Callsign: Maswings, Designator 7B recalled by IATA. Now using Malaysia Airlines IATA Code MH. | MAL | AVCODES |
| 3 | MWGC | MCS TRUCKING INC | | | SCAC4 |
| 4 | MWGI | M W G TRANSPORT INC | | | SCAC4 |
| 5 | MWGK | MS WESTERLAND GMBH & CO KG | | | SCAC4 |
| 6 | MWGN | MIDWEST LOGISTICS TRANSPORTATION LL | | | SCAC4 |
| 7 | MWGX | Midwest Generation, LLC | 7/2005 | | NAKINA |
| 8 | MWGX | MIDWEST GENERATION, LLC | | | PWRC |
| 9 | MWGX | MIDWEST GENERATION LLC | | | SCAC4 |
