| Acronym | Definition |
|---|
| OFRI➣Ontario Forest Research Institute (Ministry of Natural Resources; Canada) |
| OFRI➣Old Frisian (linguistics) |
| OFRI➣Office for Foreign Relations and Information (Czech Republic) |
| OFRI➣Oregon Forest Restoration Initiative |
| OFRI➣Oxygen Flow Rate Index (cardiovascular medicine) |
| OFRI➣Oxygen-Mediated Free Radical Injury (cardiology) |