| Abbreviation | Definition |
|---|---|
| HRD | Historical Research Development |
| HRES | Harvard Real Estate Services |
| HRG | health research group |
| HRI | Center for Human Rights Policy |
| HRI | Horticulture Research Institute |
| HRL | Harvard Robotics Laboratory |
| HRM | Health Recreation Management |
| HRO | Harvard Radiation Oncology |
| HRP | Human Rights Program |
| HRRM | Hospitality, Recreation and Resort Management (UWF) |
| HRRM | Hotel, Restaurant, Resort Management |
| HRRM | Hotel, Restaurant, & Resort Management |
| HRS | Health And Retirement Study |
| HRU | Ham Radio University |
| HRU | Human Resources University |
| HS | High Standard |
| HSA | Harvard Student Agencies |
| HSA | Health Services Administration |
| HSA | Hmong Student Association |
| HSB | Health Sciences Building |