| Abbreviation | Definition |
|---|---|
| JET | Joint Operation Planning and Execution System (JOPES) Editing Tool |
| JETS | Joint Exploitation of Tactical Systems |
| JETTA | Joint Environment Testing, Training, and Analysis |
| JEV | Joint Electric Vehicle |
| JEWC | Joint Electronic Warfare Center |
| JEZ | Joint Engagement Zone |
| JF | Joint Fighter |
| JFA | Jesus Freak Army |
| JFA | Jodie Fosters Army |
| JFA | Joint Field Activity |
| JFAAD | Joint Forward Area Air Defense |
| JFACC | Joining Forces Against a Common Competitor |
| JFACC | Joining Forces Against Common Competitors |
| JFACC | Joint Force Air Component Commander |
| JFAST | Joint Feasibility Analysis System for Transportation |
| JFAST | Joint Flow Analysis System for Transportation |
| JFB | Jamaica Fire Brigade |
| JFC | Joint Force Commander |
| JFC | Joint Forces Commander |
| JFCC | Joint Functional Component Command |