| Acronym | Definition |
|---|
| MUJ➣Mujahideen (military slang) |
| MUJ➣Miss Universe Japan (est. 1998; pageant) |
| MUJ➣Merged US-Japan (astrophysics) |
| MUJ➣Musicians' Union of Japan |
| MUJ➣Madras Union of Journalists (India) |
| MUJ➣MUFON (Mutual UFO Network) UFO (Unidentified Flying Objects) Journal |
| MUJ➣Macromedia Users Journal |