| Abbreviation | Definition |
|---|---|
| INFOC | Interfaith Based Action for Ethics and Integrity |
| INRA | Institute for Natural Resources in Africa |
| INRS | Institut National de la Recherche Scientifique |
| IPA | Innovation Prize for Africa |
| IPASA | Innovative Pharmaceutical Association of South Africa |
| IPASA | Innovative Pharmaceutical Association South Africa |
| IPN | Institut Pédagogique National |
| IQSA | Institute of Quarrying Southern Africa |
| IRAC | Institut Royal de l'Afrique Centrale |
| IRCB | Institut Royal Colonial Belge |
| IRFA | Institute of Retirement Funds Africa |
| IRMSA | Institute for Risk Management South Africa |
| ISAS | International Society Of African Scientists |
| ISDSC | Inter-State Defence and Security Committee (South Africa) |
| ISESSAH | International Society for Economics and Social Sciences of Animal Health |
| ISFA | International Student Fairs Africa |
| ISITA | Institute for the Study of Islamic Thought in Africa |
| ISLA | Initiative for Strategic Litigation in Africa |
| ISOSA | International School of South Africa |
| ISP | Institut Supérieur Pédagogique |