| 1 | MUA | Murray Air, Inc. | IATA: 5M, Callsign: Murray Air, IATA Prefix: 416, Name changed to National Air Cargo Group, Inc. d/b/a National Airlines. Name changed from Murray Aviation, Inc. | USA | AVCODES |
| 2 | MUA | Murray Aviation, Inc. | Callsign: Murray Air, Name changed to Murray Air | USA | AVCODES |
| 3 | MUA | National Air Cargo Group, Inc. d/b/a National Airlines | IATA: N8, Callsign: Murray Air, IATA Prefix: 416, Name changed from Murray Air, Inc. ICAO designator changed to NCR. Name changed from Murray Aviation, Inc. | USA | AVCODES |
| 4 | MUA | Murray Air | | | ICAO1 |
| 5 | MUA | MUA - Mediterranea Umbro Aretina | 1956 - 1979 | I | TRAFFIC |
| 6 | MUAA | MUMA, ROGER MUSICAL INSTRUMENTS | | | SCAC4 |
| 7 | MUAC | MUNOZ FLORES, GUADALUPE | | | SCAC4 |
| 8 | MUAD | MUSGROVE LOGISTICS INC | | | SCAC4 |
| 9 | MUAF | MULLEN CRANE & TRANSPORT INC | | | SCAC4 |
| 10 | MUAL | MUSICK LIVESTOCK LLC | | | SCAC4 |
| 11 | MUAN | MAUI PETROLEUM INC | | | SCAC4 |
| 12 | MUAO | MULTI SERVICES INTERMODAL CORP | | | SCAC4 |
| 13 | MUAV | MUSTANG BULK CARRIERS INC | | | SCAC4 |
| 14 | MUAY | MURRAY LEASING LLC | | | SCAC4 |
