| Abbreviation | Definition |
|---|---|
| NMAO | National Museum of Art, Osaka |
| NMAS | National Museum of Animals Society |
| NMCP | National Museum of Crime & Punishment |
| NMCW | National Museum of Chinese Writing |
| NMDC | National Museum Directors Conference |
| NMDC | National Museum Directors' Conference |
| NMEC | National Museum of Egyptian Civilization |
| NMHM | National Museum of Health and Medicine |
| NMK | National Museums of Kenya |
| NML | National Museums Liverpool |
| NMM | Nationaal Militair Museum |
| NMM | National Maritime Museum |
| NMMA | National Museum of Mexican Art |
| NMMAG | National Museum Monuments and Art Gallery |
| NMMC | National Maritime Museum Cornwall |
| NMMM | National Motor Museum Mint |
| NMMP | National Museum of Myanmar Primates |
| NMMP | Naval Memorial Museum of the Pacific |
| NMMS | Northen Maine Museum of Science |
| NMN | National Museum of Namibia |