| Abbreviation | Definition |
|---|---|
| FIPT | Foxton Inclined Plane Trust |
| FIR | Foundation for the Investigation of Reality |
| FIRE | Friends For International Relief And Education |
| FIRST | Families In Recovery to Stay Together |
| FIRST | Ferrets Information Rescue Shelter Trust |
| FIRST | Floriculture Industry Research Scholarship Trust |
| FIRST | Foundation for Ichthyosis & Related Skin Types |
| FIRST | Foundation for Individual Responsibility and Social Trust |
| FIRST | Foundation for Innovation Regional Services and Telecommunications |
| FIRST | Foundation for Inspiration and Recognition of Science and Technology |
| FISH | Friends In Self Help |
| FISH | Funding for Improved Salmonid Habitat |
| FITA | Federation of International Trade Associations |
| FITN | Fire In The Night |
| FITT | Foundation for Innovation and Technology Transfer |
| FIWE | Federation of India Women Entrepreneurs |
| FIWE | Federation of Indian Women Entrepreneurs |
| FIWN | Fox Island Wind Neighbors |
| FIWR | Florida Inspirational Writers Retreat |
| FIWY | Friends of Inti Wara Yassi |