| Abbreviation | Definition |
|---|---|
| JYFI | Jefferson Youth Foundation Inc |
| KAAF | Korea Australia Arts Foundation |
| KAF | Kol Adonai Foundation |
| KAFA | Korea Arts Foundation of America |
| KBF | Kelly Brush Foundation |
| KBF | King Baudouin Foundation |
| KBMF | Kathryn Bender Memorial Foundation |
| KCF | Kalamazoo Community Foundation |
| KCF | Keweenaw Community Foundation |
| KCF | Kittelson Charitable Foundation |
| KCFI | Kanlungan Centre Foundation Inc |
| KCFI | Knowledge Channel Foundation Inc |
| KDMF | Katie DeCubellis Memorial Foundation |
| KDMF | Kaweah Delta Medical Foundation |
| KELF | Kent Education and Learning Foundation |
| KFA | Krishnamurti Foundation America |
| KFA | Krishnamurti Foundation of America |
| KFF | Henry J. Kaiser Family Foundation |
| KFF | Kacyra Family Foundation |
| KFF | Kaiser Family Foundation |