| Acronym | Definition |
|---|
| IRRI➣International Rice Research Institute (Philippines) |
| IRRI➣Industrial Relations Research Institute (Wisconsin) |
| IRRI➣Institut Royal des Relations Internationales |
| IRRI➣International Renewable Resources Institute (Mexico) |
| IRRI➣International Resources and Recycling Institute (est. 2005) |
| IRRI➣Initial Response Readiness Inspection |