| Acronym | Definition |
|---|
| MCMR➣Music Cities Mobile Recording (Shelbyville, TN) |
| MCMR➣Multi-Channel Multi-Radio |
| MCMR➣Maryland Central Model Railroad Club (Rockville, MD) |
| MCMR➣Minder Corvee Meer Resultaat (Dutch training firm) |
| MCMR➣Michigan Critical Materials Register |
| MCMR➣Mine Counter Measures Report |
| MCMR➣Mast Cell Mediator-Releasing (immunology) |