| Abbreviation | Definition |
|---|---|
| JAC | Jianghuai Automobile Corporation |
| JAC | Jordan Aeronautical-Systems Company |
| JADC | Jalingeur Art Dance Company |
| JADC | Japan Aircraft Development Corporation |
| JADC | Joint Applications Development Centre |
| JAE | Japanese Auto Extravaganza |
| JAEC | Japan Aero Engines Corporation |
| JAEC | Japanese Aero Engine Corporation |
| JAFI | Jefferson Alcoholic Foundation Inc |
| JAIC | Japan Asia Investment Company |
| JAK | Jord Arbete Kapital |
| JAL | Japan Airlines |
| JAL | Japan Airlines Co Ltd |
| JAL | Japanese AirLines |
| JAM | Just About Music |
| JAMA | Japan Automobile Manufacturers Association, Inc. |
| JAMC | Japan Arabia Methanol Company |
| JAMC | Jordan Aircraft Manufacturing Company |
| JAMI | Japanese Association Manila Inc |
| JAN | Job Accomodation network |