| Abbreviation | Definition |
|---|---|
| FFY | Former Foster Youth |
| FFY | Foundation for Youth |
| FFY | Friends For Youth |
| FFYF | Francis Field Youth Foundation |
| FGC | Family Group Conferencing |
| FIY | Faith in Youth |
| FIYA | Foundation for Interscholastic Youth Athletics |
| FIYAH | Freely Inspiring Youth to Achieve and Hope |
| FIYB | Friends of the Ithaca Youth Bureau |
| FIYN | Florida Immigrant Youth Network |
| FIYP | Florida Indian Youth Program |
| FIYTO | Federation of International Youth Travel Operators |
| FJY | Father Jordan Youth |
| FLAW | Faults Loving Another Wish |
| FLAW | Faults Lasting A Waitlist |
| FLY | Facilitating Leadership And Youth |
| FLY | Faith Lutheran Youth |
| FLY | Family Life And Youth |
| FLY | Family Life Youth |
| FLY | Feeding Lunch to Youth |