| Abbreviation | Definition |
|---|---|
| HH | Hardenbergh Hall |
| HH | Harvard Hottie |
| HH | Hayes-Healy Residence Hall |
| HH | Hyman Hall |
| HHI | Harvard Humanitarian Initiative |
| HHP | Harvard Homepage |
| HHRF | Hawaii Hurricane Relief Fund |
| HHU | H H University |
| HHU | Heinrich Heine University |
| HI | Haskell Institute |
| HI | History |
| HIBM | High Institute of Biotechnology of Monastir |
| HICHI | Hawaii Computer-Human Interaction Lab Information |
| HICRC | Harvard Injury Control Research Center |
| HIEU | Hunan International Economics University |
| HIID | Harvard Institute for International Development |
| HIIP | Harvard Information Infrastructure Project |
| HILR | Harvard Institute for Learning in Retirement |
| HILS | Harvard Integrated Life Sciences |
| HIMS | Hamdard Institute of Management Sciences |