| Abbreviation | Definition |
|---|---|
| JASDF | Japan Air Self-Defense Force |
| JASORS | Joint Advance Special Operations Radio System |
| JASPO | Joint Advanced Signal Intelligence Program Office |
| JASSM | Joint Air To Surface Standoff Missile |
| JASSM | Joint Air-To-Surface Standoff Missile |
| JAT | Guide Joint Antiterrorism Program Manager's Guide |
| JAT | Joint Acceptance Test |
| JAT | Joint Anti-Terrorism |
| JAT | Joint Application Testing |
| JAT | Joint Aquisition Terrorism |
| JATACS | Joint Advanced Tactical Cryptological Support |
| JAWS | Janus Analytical Workstation |
| JAWS | Joint Advanced Warfighting School |
| JAWS | Joint Analytic Worldwide System |
| JAWS | Joint Munitions Effectiveness Manual (JMEM)/air-Tosurface Weaponeering System |
| JB | Jet Bomb |
| JB | Jihad Buddy |
| JB | Junction Box |
| JBC | Joint Battle Command |
| JBCA | Joint Battle Comand Authority |