| Abbreviation | Definition |
|---|---|
| JRFS | Jackie Robinson Foundation Scholarship |
| JSAF | Japan Study Abroad Foundation |
| JSCF | Jal Seva Charitable Foundation |
| JSCF | Jessica Stevens Community Foundation |
| JSCF | John Strutt Conservation Foundation |
| JSF | Johnson Scholarship Foundation |
| JSFC | Java Server Foundation Classes |
| JSSF | Jackie Spellman Scholarship Foundation |
| JSSF | Jana Setha Sahana Foundation |
| JSSF | Japan Science Support Foundation |
| JSTF | Jackson Ski Touring Foundation |
| JTCF | Jersey Tai Chi Foundation |
| JTF | Jewish Teen Foundation |
| JTF | Jewish Teen Foundations |
| JTF | John Templeton Foundation |
| JUF | Jewish Union Foundation |
| JWF | Jeremy Wilson Foundation |
| JWF | Journalist and Writers Foundation |
| JWF | Journalists and Writers Foundation |
| JYF | Jamestown Yorktown Foundation |