| Abbreviation | Definition |
|---|---|
| GYM | Gymnasium |
| GZU | Great Zimbabwe University |
| H | Harvard |
| H | History |
| H | Humanities |
| H&P | Hydaulics & Pneumatics |
| HAA | Harvard Athletic Association |
| HACIADemocracy | Harvard Association Cultivating Inter-American Democracy |
| HAHA | Honorary After Hours Activities |
| HAI | Harvard AIDS Initiative |
| HAI | Human Awareness Institute |
| HAII | Hydro and Agro Informatics Institute |
| HALO | Husker Angels Loving Others |
| HAM | Harvard Art Museums |
| HAM | History of Art and Music |
| HAO | Housing Assignment Office |
| HAPA | Hmong American Peace Academy |
| HARL | Hearing Aid Research Laboratory |
| HASA | Hmong American Student Association |
| HASS | Humanities, Arts, and Social Science |