| Abbreviation | Definition |
|---|---|
| MNJD | MS Navy JROTC Directory |
| MNM | Merchant Navy Medal |
| MNOP | Merchant Navy Orientation Program |
| MNQ | Musée naval de Québec |
| MNRM | Modélisme Naval de Rueil Malmaison |
| MNRP | Merchant Navy Reserve Pool |
| MNS | Multonian Navy Ship |
| MNSA | Mineman Seaman Apprentice |
| MNSA | neman Seaman Apprentice |
| MNSN | Mineman Seaman |
| MNSN | neman Seaman |
| MNSR | Mineman Seaman Recruit |
| MNSR | neman Seaman Recruit |
| MNT | Merchant Navy Theatre |
| MNTB | Merchant Navy Training Board |
| MOMM1 | Motor Machinist's Mate 1st Class Petty Officer |
| MOMM1 | tor Machinist's Mate 1st Class Petty Officer |
| MOMM2 | Motor Machinist's Mate 2nd Class Petty Officer |
| MOMM2 | tor Machinist's Mate 2nd Class Petty Officer |
| MOMM3 | Motor Machinist's Mate 3rd Class Petty Officer |