| Abbreviation | Definition |
|---|---|
| IAEP | Institutions and Elections Project |
| IAES | Institute For Ancient Equestrian Studies |
| IAES | Institute of Advanced Engineering and Science |
| IAFB | Institute Of Agricultural And Food Biotechnology |
| IAGN | Institute Art Gender Nature |
| IAH | Institute for the Arts and Humanities |
| IAH | Institute of Animal Health |
| IAHC | Institute for Advancement of Health Care |
| IAHC | Institute for Affordable Health Care |
| IAHD | Institute of Applied Human Dynamics |
| IAHD | Institutes of Applied Human Dynamics |
| IAHE | Institute for Allied Health Educators |
| IAHP | Institutes for the Achievement of Human Potential |
| IAHS | Institute For Applied Health Science |
| IAHS | Institute For Applied Health Sciences |
| IAHS | Institute of Applied Health Sciences |
| IAI | Independent Adeministrative Institution |
| IAI | Independent Administrative Institution |
| IAI | Information Architecture Institute |
| IAI | Institute of Archaeologists of Ireland |