| Abbreviation | Definition |
|---|---|
| FMPI | Fournaise Marketing Performance Institute |
| FMSI | Friction Material Standards Institute |
| FMSI | Friction Materials Standards Institute |
| FMTI | Faith Ministry Training Institute |
| FMTI | Florida Medical Training Institute |
| FNFI | First Nations Futures Institute |
| FNI | Field Neurosciences Institute |
| FNI | Florey Neuroscience Institutes |
| FNI | Fridtjof Nansen Institute |
| FNIH | Foundation for the National Institutes of Health |
| FNIS | Fellow of the Nigerian Institution of Surveyors |
| FNRI | First Nations Repatriation Institute |
| FNRI | Food and Nutrition Regulatory Institute |
| FNRI | Food and Nutrition Research Institute |
| FNSI | First Nations Statistical Institute |
| FNTI | First Nations Technical Institute |
| FOAI | Force Of Awesome Institute |
| FOBI | Family Owned Business Institute |
| FOMI | FDNY Officers Management Institute |
| FOSI | Family Online Safety Institute |