| 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 |