| Abbreviation | Definition |
|---|---|
| JAER | Japan Association of English Romanticism |
| JAFA | Japan Australia Friendship Association |
| JAFA | Journalism Alumni and Friends Association |
| JAFFA | Jesus And Friends Forever Association |
| JAG | Junior Association of Golf |
| JAGA | Jamaica Amateur Gymnastics Association |
| JAHA | Johnstown Area Heritage Association |
| JAHA | Journal of the American Heart Association |
| JAHU | Jacksonville Association of Health Underwriters |
| JAIA | Japan Adhesive Industry Association |
| JAIA | Japan Automobile Importers Association |
| JAID | Jamaica Association on Intellectual Disabilities |
| JAID | Jamaican Association on Intellectual Disabilities |
| JAID | Japanese Association for Infectious Diseases |
| JAIRA | Japan Association of Ion Research and Application |
| JAIS | Journal of the Association for Information Systems |
| JAK | Journalists Association of Korea |
| JALPA | Jamaica Air Line Pilots Association |
| JAMA | Jackson Area Manufacturers Association |
| JAMA | Japan Automobile Manufacturers Association |