| Abbreviation | Definition |
|---|---|
| HDI | Healthcare Delivery Institute |
| HDI | Humanitarian Disaster Institute |
| HEBD | Healthy Eating by Design (Active Living by Design; North Carolina Institute for Public Health) |
| HEFI | Higher Education Futures Institute |
| HEI | Health Effects Institute |
| HEI | House Ear Institute |
| HEIR | Higher Education Institution Registry |
| HEIS | Higher Education Institutions |
| HEMI | Hopkins Extreme Materials Institute |
| HERI | Health Equity Research Institute |
| HERI | Higher Education Research Institute |
| HFI | Health Facility Institute |
| HFI | Holy Family Institute |
| HFI | Housing Finance Institute |
| HFI | Houston Fertility Institute |
| HFLI | Henry Ford Learning Institute |
| HFLI | Hunger Free Leadership Institute |
| HFMI | Highly Filled Materials Institute |
| HGFTI | Holy Ghost Fathers Technical Institute |
| HGI | Harvard Global Institute |