| Acronym | Definition |
|---|
| IAAA➣Inflammatory Abdominal Aortic Aneurysm |
| IAAA➣International Automotive Advertising Awards |
| IAAA➣International Automotive Advertising Awards (est. 1995) |
| IAAA➣International Association of Astronomical Artists |
| IAAA➣Interscholastic Athletic Administrators Association (various locations) |
| IAAA➣Illinois Agricultural Auditing Association (est. 1924) |
| IAAA➣I Am An Accountant |
| IAAA➣Institut für Anglistik, Amerikanistik und Anglophonie (German: Anglistic, American and Anglophone Institute) |
| IAAA➣Ithaca Asian American Association (New York) |
| IAAA➣I Am An AIESECer (Association for the International Exchange of Students in Economics and Commerce) |
| IAAA➣Identification, Authentication, Authorisation and Accountability |
| IAAA➣Idaho Agricultural Aviation Association |
| IAAA➣Integrated Advanced Avionics for Aircraft |
| IAAA➣Integrated Active Antenna Array |
| IAAA➣International American Albino Association |
| IAAA➣I Am An Attorney |
| IAAA➣Integrated Advanced Avionics/Aerospace |