| Abbreviation | Definition |
|---|---|
| INU | IQRA National University |
| INUL | Isaac Newton University Lodge |
| INVS | Institut National de Veille Sanitaire |
| IOCA | Intercollegiate Outing Club Association |
| IOCB | Institute Of Computational Biology |
| IOCM | Instituto de Obreros a la Cosecha Mundial |
| IOCT | Institute Of Computer Technology |
| IOCT | Institute Of Creative Technologies, de Monfort University |
| IOCW | Intellectual Origins of the Contemporary West |
| IOJ | Institute of Jamaica |
| IOM | Institute of Medicine |
| IONCMASTE | Imperial Oil National Centre for MAthematics, Science, and Technology Education |
| IOP | Institute Of Physics |
| IOP | Institute Of Politics |
| IOP | Institute Of Psychiatry |
| IOP | Institutional Operational Plan |
| IOU | Islamic Online University |
| IP | Interesting Point |
| IPA | Institutul de Proiectare in Automatizari (Institute of Design in Automation) |
| IPAC | Instituto Particular Abdon Calderon |