| Abbreviation | Definition |
|---|---|
| HISAM | Hitchcock Institute for Studies in American Music |
| HISC | Horticultural Institute of Southern California |
| HISI | Hispanic Institute of Social Issues |
| HIST | Hidaya Institute of Science Technology |
| HIT | Hokkaido Institute of Technology |
| HITI | Harvard Institute of Translational Immunology |
| HITK | Heritage Institute of Technology Kolkata |
| HITK | Heritage Institute of Technology, Kolkata |
| HITM | Hindustan Institute of Technology and Management |
| HIVE | Higher Institute of Villainous Education |
| HIWP | Hebrew Institute of White Plains |
| HIWT | Hobart Institute of Welding Technology |
| HKDI | Hong Kong Design Institute |
| HKI | Hamilton Kerr Institute |
| HKIE | Hong Kong Institution of Engineers |
| HKIP | Hong Kong Institute of Planners |
| HKIS | Hong Kong Institute Of Surveyors |
| HKIS | Hong Kong Institution of Science |
| HKMI | Hong Kong Music Institute |
| HKPI | Hong Kong Packaging Institute |