| Carrier Code | Carrier Name |
| MMUU | MINISTRY OF DEFENCE |
| MMVU | MULTI MODAL INTERNATIONAL |
| MMXN | MARITIMA MEXICANA S A DE C V |
| MMXU | MOBILE MINI STORAGE SYSTEMS |
| MNFU | MONFER SPA |
| MNGV | MANGROVE SHIPPING LIMITED |
| MNSM | MAINSTAY SHIPPING CO LTD |
| MNSP | MARINE SHIPPING LINES INC |
| MNTB | MOUNTAIN BREEZE CORPORATION |
| MNTL | MARINE TERMINALS CORPORATION |
| MNVQ | MELTEMI NAVIGATION CO LTD |
| MNYD | MAINYARD SHIPPING COMPANY LIMITED |
| MOBA | MOWBRAY TOWING INC |
| MOBJ | MOBRO MARINE INC |
| MOBY | MOBY MARINE CORP |
