| Acronym | Definition |
|---|
| HRI | Hellenic Resources Institute (Greece) |
| HRI | Horse Racing Ireland |
| HRI | Housing Resources, Inc. (various locations) |
| HRI | Heme-Regulated Inhibitor (proteins) |
| HRI | Human-Robot Interaction |
| HRI | Heat-Related Illness |
| HRI | High Resolution Imager |
| HRI | Historic Resources Inventory (various locations) |
| HRI | Human Rights Internet (Ottawa, Canada) |
| HRI | Hans Rudolph, Inc. (respiratory valves; Shawnee, KS) |
| HRI | Human Rights Institute (various organizations) |
| HRI | High-Risk Infant (various organizations) |
| HRI | Hitachi Research Institute (Japan) |
| HRI | High Rising Intonation (speech) |
| HRI | Hotel, Restaurant, and Institution |
| HRI | Horticulture Research Institute (American Nursery & Landscape Association) |
| HRI | High Resolution Instrument |
| HRI | Horticultural Research International (United Kingdom) |
| HRI | Hull Royal Infirmary |
| HRI | Huddersfield Royal Infirmary (UK) |
| HRI | High Refractive Index |
| HRI | Health-Related Item (non-drug pharmacy products) |
| HRI | Human Readable Interpretation |
| HRI | Hannah Research Institute (UK) |
| HRI | High Resolution Imagery |
| HRI | Heart Rate Impairment (cardiology) |
| HRI | Hyundai Research Institute |
| HRI | Humanitarian Relief Initiative |
| HRI | Health Right, Inc. (Washington, DC) |
| HRI | Hazard Risk Index |
| HRI | Handedness Research Institute (Bloomington, IN) |
| HRI | Human Resources Improvements (France) |
| HRI | Hard Rock International |
| HRI | Health Resources Incorporated |
| HRI | Hamagin Research Institute (Japan) |
| HRI | High Resolution Isolation |
| HRI | Household Residual Income (UK) |
| HRI | Human Resource Index |
| HRI | High Risk of Isolation |
| HRI | Height-Range Indicator |
| HRI | High Resolution Information |
| HRI | Heading Repeater Indicator |
| HRI | Howe Robinson Index (shipbroker freight index) |