| Acronym | Definition |
|---|
| CMJ | Conseil Municipal des Jeunes (French: Municipal Youth Council) |
| CMJ | Chinese Medical Journal |
| CMJ | Canadian Military Journal |
| CMJ | College Mathematics Journal |
| CMJ | Christopher Martin-Jenkins (cricket journalist) |
| CMJ | Cyan, Magenta, Jaune (French: Cyan, Magenta, Yellow) |
| CMJ | Canon Marketing Japan |
| CMJ | College Media Journal |
| CMJ | Complete Metal Jacket |
| CMJ | Civil Marriage Celebrant (Australia) |
| CMJ | Compagnie Maxi Jeux (French entertainment company) |
| CMJ | Certified Measuring Judge |
| CMJ | Chief of Military Justice |
| CMJ | Country Music Journal |
| CMJ | Colloque Médical du Jeudi (French: Medical Symposium of Thursday) |
| CMJ | Critical Mass Journal |