| Abbreviation | Definition |
|---|---|
| JAI | Joint Administrative Instruction |
| JAI | Joint Airdrop Inspection |
| JAIC | Joint Air Intelligence Center |
| JAIEG | Joint Atomic Information Exchange Group |
| JALCMC | Joint Ammunition Life Cycle Management Command |
| JAM | Joint Ammo And Magazines |
| JAM | Joint Ammunition and Magazines |
| JAMC | Joint Amphibious Mine Countermeasures |
| JAMES | Joint Automated Message Editing System |
| JAMP | JINTACCS (Joint Interoperability of Tactical Command and Control Systems) Army Master Plan |
| JAMP | JINTACCS Army Master Plan |
| JAMP | Journal of America's Military Past |
| JAMPS | JINTACCS (Joint Interoperability of Tactical Command and Control Systems) Automated Message Preparation System |
| JAMPS | JINTACCS Automated Message Preparation System |
| JAMPS | Joint Interoperability of Tactical Command and Control Systems (JINTACCS) Automated Message Preparation System |
| JAMS | Joint Attack Munition Systems |
| JAN | Joint Army Navy |
| JANAF | Joint Army, Navy, And Air Force |
| JANAP | Joint Army- Navy- Air Force Publication |
| JANAP | Joint Army, Navy, Air Force Publication |