Click on the appropriate first letter of the abbreviation that you require
Alphabetical list of Abbreviations ~ J
| J | Joule |
| JAA | Joint Aviation Authorities |
| Janet | Joint Academic Network |
| JAR | Joint airworthiness requirement |
| JAS | Joint airmiss section |
| JAST | Joint advanced strike technology (aircraft) |
| JATCC | Joint air traffic control centre |
| JATCRU | Joint air traffic control radar unit |
| JATE | Joint Air Transport Establishment |
| Joint Air Transport Executive |
| JATO | Jet-assisted take-off |
| JBIG | Joint binary imaging group |
| JCA | Jamming control authority |
| JCB | Joint Capability Board |
| JCC | Joint communications centre |
| JCOC | Joint command operations centre |
| JCOMM | Joint Commission for Oceanography and Marine Meteorology (WMO) |
| JCS | Joint chiefs of staff |
| JESSI | Joint European semiconductor system initiative |
| JETS | Joint en-route terminal system |
| JFAI | Joint formal acceptance inspection |
| JFET | Junction field effect transistor |
| JHQ | Joint headquarters |
| JOC | Joint operations centre |
| JP | Jet propellant |
| JPADS | Joint precision airdrop system |
| JPEG | Joint photographic experts group |
| JPT | Jet pipe temperature |
| JRRF | Joint Rapid Reaction Force |
| JSGPM | Joint service general purpose mask |
| JST | Japanese standard time |
| JSTARS | Joint surveillance and target attack radar system |
| JTFP | Joint tactical fusion programme |
| JTIDS | Joint tactical information distribution system |
