| Abbreviation | Definition |
|---|---|
| MMOP | Melbourne Museum Of Printing |
| MMPA | Maine Museum of Photographic Arts |
| MMPM | Mary March Provincial Museum |
| MMTM | Milton Model Train Museum |
| MMWG | Museums and Memorials Working Group |
| MNA | Museum of Northern Arizona |
| MNAA | Museu Nacional de Arte Antiga |
| MNBA | Museo Nacional de Bellas Artes |
| MNH | Museum of Natural History, Smithsonian Institution |
| MNH | Museum of Nebraska History |
| MNM | Museum of New Mexico |
| MNMF | Museum of New Mexico Foundation |
| MOA | Museum of Art |
| MOA | Museum Of Outdoor Arts |
| MOAC | Museum Online Archive of California |
| MOAD | Museum of African Design |
| MOAD | Museum of African Diaspora |
| MOAD | Museum Of Art and Design |
| MOAD | Museum of the African Diaspora |
| MOAF | Museum of American Finance |