| Abbreviation | Definition |
|---|---|
| FIEI | Farm and Industrial Equipment Institute |
| FIEM | Future Institute of Engineering and Management |
| FIET | Fellow of the Institution of Engineering and Technology |
| FIF | Financial Institutions File |
| FIFI | Florida Institute for Family Involvement |
| FIFI | Fragile Infant Feeding Institute |
| FIIRO | Federal Institute of Industrial Research Oshodi |
| FIL | Financial Institution Letter |
| FILM | Foundation Institute for Learning Media |
| FIME | Finnish Institute in the Middle East |
| FIMechE | Fellow of the Institution of Mechanical Engineers. |
| FIMR | Finnish Institute of Marine Research |
| FIMS | Farook Institute of Management Studies |
| FINA | Federal Institute for National Aquatics |
| FINR | Florida Institute of Neurologic Rehabilitation |
| FINR | Florida Institute of Neurological Rehab |
| FINZ | Fundraising Institute of New Zealand |
| FIO | First Institute of Oceanography |
| FIOH | Finnish Institute for Occupational Health |
| FIOS | Federal Institute of Studies |