| Abbreviation | Definition |
|---|---|
| IIHR | Indian Institute of Horticulture Research |
| IIHR | Indian Institute Of Human Rights |
| IIHR | Iowa Institute of Hydraulic Research |
| III | Industry Institute Interface |
| III | Insurance Institute of India |
| III | Insurance Institute of Ireland |
| IIIB | International Institute of Islamic Bankers |
| IIIF | International Institute of Islamic Finance |
| IIIHR | Institute for International Human Resources (South Korea) |
| IIIS | Institute for Integrated and Intelligent Systems |
| IIIS | Institute for Interdisciplinary Information Sciences |
| IIIS | Institute for International Integration Studies |
| IIIS | International Institute for Islamic Studies |
| IIIS | International Institute of Informatics and Systemics |
| IIISS | India International Institute of Social Sciences |
| IIIT | Indian Institutes of Information Technology |
| IIIT | Indraprastha Institute of Information Technology |
| IIIT | International Institute of Information Technology |
| IIITI | Iligan International Institute of Technology Incorporated |
| IIJ | Indian Institute of Jewellery |