| Abbreviation | Definition |
|---|---|
| JELM | Japanese Experiment Logistics Module |
| JEM | Journalism English And Modern |
| JEM | Japanese Element Module |
| JEM | Japanese Experiment Module |
| JEO | Joint Elected Official |
| JERS | Japanese Earth Resources Satellite |
| JES | Joint Environment Simulator |
| JESS | Joshi's External Stabilization System |
| JEST | Joint Entrance Screening Test |
| JET | Joint Entrance Test |
| JET | Joint Entrance Test |
| JETS | Joint Employment Transition Services |
| JEV | Japanese Encephalitis Virus |
| JFET | Junction Field Effect Transistor |
| JFM | Junior Fire Marshal |
| JFM | Journal of Atmospheric Science |
| JFP | Journal of Family Practice |
| JFP | Jobs For Programmers |
| JFP | Jobs for Philosophers |
| JFR | Job Fair Recruit |
| JFRA | Jack J. Rehmann Community Leadership Award |
| JFRP | Job Fair Recruit Package |
| JFW | Junior Forest Warden |
| JFY | Jobs For Youth |
| JG | Jump If Greater |
| JG-PP | Joint Group on Pollution Prevention |
| JGA | JuxtaGlomerular Apparatus |
| JGI | Jejunogastric Intussusception |
| JGP | Journal of General Physiology |
| JGR | Journal of Geophysical Research |
| JGS | Jewish Geriatric Services |
| JGV | Journal of General Virology |
| JGW | Junior Grand Warden |
| JHH | Job Hunting Handbook |
| JHM | Jerky Head Movement |
| JHM | Journal of the History of Medicine and Allied Sciences |
| JHO | Judicial Hearing Officer |
| JHU | Johns Hopkins University |
| JIA | Juvenile Idiopathic Arthritis |
| JIAC | Juvenile Intake and Assessment Center |
| JIC | Junior Ingenieur Conseil |
| JIC | Joint Intelligence Co-ordinator |
| JICA | Japan International Cooperation Agency |
| JID | Journal of Infectious Diseases |
| JIEAS | Journal of International Environmental Application and Science |
| JIF | Job Information Form |
| JIF | Joint Initiative Funding |
| JILA | Joint Institute For Laboratory Astrophysics |
| JIM | Joints In Motion |
| JIM | Job Information Manager |