| Acronym | Definition |
|---|
| JAF | JavaBeans Activation Framework |
| JAF | Juge aux Affaires Familiales (French: Family Court Judge) |
| JAF | Japan Automobile Federation |
| JAF | Java Application Framework |
| JAF | Java Assist Facility |
| JAF | Java Beans Activation Framework |
| JAF | Java Agent Framework |
| JAF | Java Activation Framework |
| JAF | Joni and Friends (ministry; Pennsylvania) |
| JAF | Jordanian Armed Forces |
| JAF | Jalalabad Airfield (Afghanistan) |
| JAF | Jóvenes Adultos Frater (Spanish: Fráter Young Adults; Guatemala) |
| JAF | Junction Arts Festival (Australia) |
| JAF | Ja Feel |
| JAF | Juan Antonio Ferreira (Argentinian singer) |
| JAF | Jatiyatabadi Ainjibi Forum (Bangladesh) |
| JAF | Joint Attack Fighter |
| JAF | Joint Air Force |
| JAF | Joint Architecture Framework |
| JAF | Joseph Anthony Fatone (NSYNC) |