| Abbreviation | Definition |
|---|---|
| FOSI | Family Online Safety Institute's |
| FOSI | Florida Ocean Sciences Institute |
| FOSI | Friends of Swiss Institute |
| FOWI | Friends of the Wrigley Institute |
| FOWI | Future Of Work Institute |
| FPI | Fiscal Policy Institute |
| FPI | Fluid Power Institute |
| FPI | Foodservice Packaging Institute |
| FPI | Foreign Policy Institute |
| FPRI | Foreign Policy Research Institute |
| FPTI | Focus Personal Training Institute |
| FQI | Federal Quality Institute |
| FRI | Finance Risk Institute |
| FRI | Financial Research Institute |
| FRI | Fisheries Research Institute |
| FRI | Foundational Research Institute |
| FRI | Fujitsu Research Institute |
| FRIBA | Fellow of the Royal Institute of British Architects |
| FRICS | Fellow Royal Institution of Chartered Surveyors |
| FRIM | Forest Research Institute Malaysia |