| Abbreviation | Definition |
|---|---|
| JDEP | Jamaica Deaf Education Project |
| JDF | Juvenile Diabetes Foundation |
| JDL | Jewish Defense League |
| JDLBCMHL | Judge David L. Bazelon Center for Mental Health Law |
| JDRF | Juvenile Diabetes Research Foundation |
| JDRFI | Juvenile Diabetes Research Foundation International |
| JEDI | Jefferson Economic Development Institute |
| JETS | Junior Engineer Technical Society |
| JEW | Jewish Enviornmental Workshop |
| JF | Jocotoco Foundation |
| JF | The Jimmy Fund (Dana-Farber Cancer Institute) |
| JFCY | Justice For Children and Youth |
| JFFR | Jewish Foundation for the Righteous |
| JFJ | Jackets For Jobs |
| JFJ | Jews For Jesus |
| JFJ | Jews For Judaism |
| JFJFEF | Jewish Fund for Justice Family Endowment Fund |
| JFJI | Jews For Judaism, Inc. |
| JFJWF | Jewish Fund for Justice Wedding Fund |
| JFR | Jewish Foundation for the Righteous |