| Abbreviation | Definition |
|---|---|
| HICA | Highland Institute for Contemporary Art |
| HICI | Hmong International Culture Institute |
| HICJ | Hastings Institute for Criminal Justice |
| HICT | Higher Institute of Computer Technology |
| HIDI | Hospital Industry Data Institute |
| HIEE | Honeywell Institute for Ecosystems Education |
| HIEE | Hyderabad Institute of Electrical Engineering |
| HIEE | Hyderabad Institute of Electrical Engineers |
| HIEO | Huazhong Institute of Electro Optics |
| HIET | Heart Institute of East Texas |
| HIET | Hindustan Institute of Engineering and Technology |
| HIET | Hindustan Institute of Engineering Technology |
| HIFS | Hingham Institution for Savings |
| HIGE | Haenicke Institute for Global Education |
| HIHR | Hawaii Institute for Human Rights |
| HIHR | Hawai'i Institute for Human Rights |
| HII | Health Improvement Institute |
| HII | Health Informatics Institute |
| HIIT | Helsinki Institute for Information Technology |
| HIJ | Horological Institute of Japan |