| Abbreviation | Definition |
|---|---|
| IAEA | International Association of Estate Agents |
| IAEC | International Asami Executive Committee |
| IAEC | International Association of Educating Cities |
| IAESTE | International Association for the Exchange of Students for Technical Experience |
| IAF | Interfaith Alliance Foundation |
| IAFF | International Association of Athletic Federations |
| IAFF | International Association of Fire Fighters |
| IAFFBF | International Association of Fire Fighters Burn Foundation |
| IAFI | Institute of Agricultural and Food Information |
| IAFI | Interfaith Alliance Foundation, Inc. |
| IAFI | International Academic Friends of Israel |
| IAHC | International Association for Human Caring |
| IAHSS | International Association for Healthcare Security and Safety |
| IAHV | International Association for Human Values |
| IAIB | International Association of Internet Broadcasters |
| IAJE | International Association for Jazz Education |
| IAJGS | International Association of Jewish Genealogical Societies |
| IAL | International Association of Laryngectomees |
| IALA | International Association of Lighthouse Authorities |
| IALA | International Auxiliary Language Association |