FMJ
| Acronym | Definition |
|---|---|
| FMJ | Full Metal Jacket |
| FMJ | Fédération des Maisons de Jeunes (French: Federation of Youth Centres; Belgium) |
| FMJ | Facility Management Journal |
| FMJ | Freedom for Media in Java (software; computer programming) |
| FMJ | Folk Music Journal (English Folk Dance and Song Society; London, England, UK) |
| FMJ | Flagfootball Management Japan |
| FMJ | Forest Machine Journal (UK) |
| FMJ | First Myoclonic Jerk |