| 1 | MMD | Air Alsie A/S | Callsign: Mermaid, ICAO designator changed from ALS | DK | AVCODES |
| 2 | MMD | Alsie Express | IATA: 6I, Callsign: Mermaid, Operated by Air Alsie | DK | AVCODES |
| 3 | MMD | Air Alsie | | | ICAO1 |
| 4 | MMDA | M M & M TRANSPORTATION LLC | | | SCAC4 |
| 5 | MMDB | MID MOVING & STORAGE INC | | | SCAC4 |
| 6 | MMDC | M & M DELIVERIES INC | | | SCAC4 |
| 7 | MMDD | MERCHANTS MOVING & STORAGE INC | | | SCAC4 |
| 8 | MMDE | MULTI FREIGHT EXPRESS INC | | | SCAC4 |
| 9 | MMDF | MONTRIG FREIGHT | | | SCAC4 |
| 10 | MMDG | MMD LOGISTICS INC | | | SCAC4 |
| 11 | MMDK | MODUS MEDICAL DEVICES INC | | | SCAC4 |
| 12 | MMDN | MULTI-MODAL TRUCKING INC | | | SCAC4 |
| 13 | MMDR | M & M DELIVERY LLC | | | SCAC4 |
| 14 | MMDT | MULTIMODAL TRANSPORTATION CORP INC | | | SCAC1 |
