| Abbreviation | Definition |
|---|---|
| IISPL | Indian Institute of Software Programming Language |
| IISR | Indian Institute of Spices Research |
| IISR | Indian Institute of Sugarcane Research |
| IISS | Indian Institute of Soil Science |
| IISS | Institute for Integrated Sensor Systems |
| IISS | Institute of International and Strategic Studies |
| IISS | International Institute For Strategic Studies |
| IISS | International Institute Of Strategic Studies |
| IISS | Israel Institute for Strategic Studies |
| IIST | Indian Institute of science and technology |
| IIST | Indian Institute of Science Technology |
| IIST | Indore Institute of Science Technology |
| IIST | Institute for International Studies and Training |
| IIST | Institute of Integrated Science and Technology |
| IIST | International Institute for Software Testing |
| IIST | International Institute of Sports Therapists |
| IIT | Illinois Institute of |
| IIT | Indian Institute of Tatti |
| IIT | Indian Institute of Technology |
| IIT | Internal Institute of Terrorism |