| Abbreviation | Definition |
|---|---|
| JFH | Jamaica Foundation of Houston |
| JFJH | Jazz Foundation of Jackson Hole |
| JFTFP | Japan Foundation Touring Film Programme |
| JFU | Jewish Foundation of Ukraine |
| JHF | Japan Heart Foundation |
| JHF | Jian Hua Foundation |
| JHF | Joyful Heart Foundation |
| JHSF | Japan Health Science Foundation |
| JHSF | Japan Health Sciences Foundation |
| JKCF | Jack Kent Cooke Foundation |
| JLF | Japan Law Foundation |
| JMMBF | Jack Miner Migratory Bird Foundation (Kingsville, Ontario, Canada) |
| JNFC | Jolly Nyeko Foundation Canada |
| JPAF | Japan Performing Arts Foundation |
| JPF | Jackson Purchase Foundation |
| JPF | Jordan Press Foundation |
| JPMF | Jess Parrish Medical Foundation |
| JRC | Jointed Reinforced Concrete |
| JREF | James Randi Educational Foundation |
| JRF | Jai Research Foundation |