| Abbreviation | Definition |
|---|---|
| IFN | Institutet för Näringslivsforskning |
| IFO | Institute of Fermentation Osaka |
| IFO | Institute of Financial Operations |
| IFOA | Institute and Faculty of Actuaries |
| IFOB | Institute for Family Owned Business |
| IFOR | Institute for Operations Research |
| IFOT | Institute for Officer Training |
| IFPRI | International Fine Particle Research Institute |
| IFR | Institute for Field Research |
| IFR | Institute for Fisheries Resources |
| IFRD | Institute For Fuel Research And Development |
| IFRD | Institute Of Fuel Research And Development |
| IFRD | Institute Of Fuel Research Development |
| IFRIT | Institute of Forest Resource Information Technique |
| IFS | Institute for Families in Society |
| IFS | Institute for Family Studies |
| IFS | Institute for Fiscal Studies |
| IFS | Institute for Fusion Studies |
| IFS | Institute for Sustainability |
| IFS | Institute of Forensic Sciences |