| Abbreviation | Definition |
|---|---|
| IS | Integrated Sciences |
| ISA | Indian Student Association |
| ISA | International Student Advising |
| ISA | International Student Association |
| ISA | International Students Association |
| ISA | Islamic Students Association |
| ISAT-SAC | Information Service and Technology - Student Advisory Committee |
| ISB | Indian School of Business |
| ISB | Information Sciences Building |
| ISB | Institute for Systems Biology |
| ISB | Integrative Studies Biology |
| ISB | Intellectual Sharing Body |
| ISB | International School Bangkok |
| ISB | International School of Brussels |
| ISB1 | Information Sciences Building 1 |
| ISB2 | Information Sciences Building 2 |
| ISBA | Indian Subcontinent Business Association at Ross School of Business |
| ISBA | International School for Business Acumen, Ahmedabad |
| ISBC | International School for Biodynamic Craniosacral Therapy |
| ISBE | Imaging Science and Biomedical Engineering |