| Abbreviation | Definition |
|---|---|
| IUAC | Instituto Universitario de Aeronautica Civil |
| IUAC | Inter University Accelerator Center |
| IUAC | Inter University Accelerator Centre |
| IUAD | Italian University of Arts and Design |
| IUAP | Indiana University Apprenticeship Program |
| IUAP | Institut Universitaire Asie Pacifique |
| IUAS | Institute for Unmanned Aerial Systems |
| IUAT | Inter University Archery Tournaments |
| IUAU | International United Ankara University |
| IUB | Independent University, Bangladesh |
| IUB | Indiana University |
| IUB | Indiana University Bloomington |
| IUB | Indiana University's |
| IUB | International University Bremen |
| IUB | Islamia University Bahawalpur |
| IUB | Islamia University of Bahawalpur |
| IUBC | Independent University Bangladesh Chittagong |
| IUBC | Inter University Basketball Competition |
| IUBE | International University for the Bio Environment |
| IUBF | Inter University Bhikku Federation |