FJJ
| Acronym | Definition |
|---|---|
| FJJ | FreddyJrJr |
| FJJ | Fondation Jean-Jaurès (French: Jean Jaures Foundation; Paris, France) |
| FJJ | Famous Jett Jackson (TV show) |
| FJJ | Fédération des Jeunes Journalistes (French: Federation of Young Journalists) |
| FJJ | Fixed Justification Jitter |