FJO
| Acronym | Definition |
|---|---|
| FJO | Firm Job Offer |
| FJO | Foyer des Jeunes Ouvriers (French: Home Young Workers) |
| FJO | Fribourg Jazz Orchestra (Fribourg, Switzerland) |
| FJO | Functional Jaw Orthopedics |
| FJO | Floreffe Jazz Orchestra (Belgian jazz orchestra) |
| FJO | Festival de la Jeunesse Orthodoxe (French: Festival of Orthodox Youth) |
| FJO | Fonds pour la Jeunesse Orléannaise (French: Fund for Youth Orleans; Orleans, France) |
| FJO | Feeling Jazz Orchestra (Japan) |
| FJO | Followers of the Jedi Order (Star Wars gaming clan) |