| Acronym | Definition |
|---|
| IISC➣Indian Institute of Science |
| IISC➣International Institute of Space Commerce (est. 2007; Isle of Man) |
| IISC➣Interaction Institute for Social Change |
| IISC➣Inelastic Ion-Surface Collisions (workshop) |
| IISC➣International Institute for the Study of Cuba (est. 2007; UK) |
| IISC➣Islamic Information Society of Calgary (Canada) |
| IISC➣International Information Security Conference |
| IISC➣Initial In-Service Support Concepts |
| IISC➣International Integrated Supply Chain (evaluates manufacturers) |