IAA

IAA is a three letter acronym that may stand for:

• Idyllwild Arts Academy, part of the Idyllwild Arts Foundation
• Immigration Appellate Authority (UK)
• IMSA Alumni Association
• Indian Association of Alberta
• Indianapolis Airport Authority
• Indole-3-acetic acid (plant hormone)
• Institute for Applied Autonomy
• Institute of Actuaries of Australia
• Instituto de Arqueología Amazónica
• Instituto de Astrofísica de Andalucía
• Insulin autoantibody, used in diagnosing Latent autoimmune diabetes
• Insurance Application Architecture, an Operating model for business
• Intelligence Authorization Act (1991 - U.S.)
• Interactive Achievement Awards
• Interlochen Arts Academy, part of the Interlochen Center for the Arts
• International Academy of Architecture
• International Academy of Astronautics
• International Actuarial Association
• International Advertising Association, accredits courses such as at Zayed University
• International Affairs Association of the University of Pennsylvania
• International Alpaca Association
• International Ammunition Association
• International Aquathlon Association
• International Association for Aerobiology
• International Association of Astacology, for the study of Crayfish
• Internationale Automobil-Ausstellung, Frankfurt Motor Show
• Interrupted aortic arch
• Investment Adviser Association
• Iran Aseman Airlines, call-sign IAA
• Irish Aviation Authority
• Islamic Army of Aden
• Israel Airports Authority
• Israel Antiquities Authority
• Israeli Astronomical Association
• I'm An Angel - charity helping local communities in Bali, Indonesia

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