HIRI
| Acronym | Definition |
|---|---|
| HIRI | Home Improvement Research Institute (Tampa, Florida) |
| HIRI | Heat Island Reduction Initiative (US EPA) |
| HIRI | Human Interaction Research Institute (Los Angeles, CA; est. 1961) |
| HIRI | Hellenic Investor Relations Institute (est. 2002) |
| HIRI | Hepatic Ischemia Reperfusion Injury |
| HIRI | Hyundai Industrial Research Institute |