The meaning of the Acronym IAA is...

IAA is

• Institute of Actuaries of Australia
• Indole Acetic Acid
• Internationale Automobil Ausstellung

More Meanings For IAA:

• Insurance Application Architecture
• Insurrectional Army of America
• Institute of Actuaries of Australia
• Indole Acetic Acid
• Internationale Automobil Ausstellung
• Internal Accounting Association
• International Aerospace Abstracts

IAA is also in:

• Accounting
• NASA
• Science Fiction
• Software
• Unfiled