| Abbreviation | Definition |
|---|---|
| JRIM | Joint Requirements Integration Manager |
| JRMB | Joint Requirements and Management Board |
| JRMB | Joint Requirements Management Board |
| JRMES | Journal of Roman Military Equipment Studies |
| JRO | Joint Requirements Office |
| JROC | Joint Required Operational Capability |
| JROC | Joint Requirements Oversight Council |
| JROTC | Junior Reserve Officer Training Corps |
| JROTC | Junior Reserve Officer's Training Program |
| JRS | Joint Reporting Structure |
| JRSC | Jam Resistant Secure Communications |
| JRSC | Jam-Resistant Secure Communications |
| JRSC | Joint Rescue Sub-Center |
| JRSOI | Joint Reception, Staging, Onward Movement, and Integration |
| JRTC | Joint Readiness Training Center |
| JRX | Joint Readiness Exercise |
| JS | Joint Staff |
| JS | The Joint Staff |
| JSA | Joint Security Area |
| JSAAWS | Joint Semi-Autonomous Air Weapon System |