| Acronym | Definition |
|---|
| AAI➣Arab American Institute (Washington, DC) |
| AAI➣American Association of Immunologists |
| AAI➣Atheist Alliance International |
| AAI➣All Appropriate Inquiry |
| AAI➣AirTran Holdings, Inc. (Nevada and Florida) |
| AAI➣Analisi Ambientale Iniziale (Italian: Initial Environmental Assessment) |
| AAI➣Airport Authority of India |
| AAI➣Accredited Adviser in Insurance |
| AAI➣Afro Asiatisches Institut (German: Afro-Asian Institute; Austria) |
| AAI➣American Antitrust Institute |
| AAI➣Adjusted Available Income (student financial aid) |
| AAI➣Authentication and Authorization Infrastructure |
| AAI➣Alpine Ascents International (Seattle, WA) |
| AAI➣Allied Armies in Itlay |
| AAI➣Area of Archaeological Importance (UK) |
| AAI➣Adoption Associates Inc (Jenison, MI) |
| AAI➣Asian Arts Initiative (various locations) |
| AAI➣Asia America Initiative (Washington, DC) |
| AAI➣Airline Ambassadors International |
| AAI➣Adoption Advocates International (Port Angeles, WA) |
| AAI➣Alliance of American Insurers |
| AAI➣Architectural Association of Ireland (Dublin, Ireland; est. 1896) |
| AAI➣African-American Institute (formerly Institute of African American Relations, Washington DC) |
| AAI➣Action Aid International (South Africa) |
| AAI➣Adam Aircraft Industries |
| AAI➣Ankle-Arm Index (atherosclerosis) |
| AAI➣Asian American Institute |
| AAI➣Agribusiness Association of Iowa |
| AAI➣Advantest America, Inc. (various locations) |
| AAI➣Autodesk Approved Instructor |
| AAI➣Airline Automation Inc |
| AAI➣Aristolochic Acid I (toxicology) |
| AAI➣Alliance for Africa's Industrialization |
| AAI➣Asosiasi Advokat Indonesia (Indonesian Advocates Association) |
| AAI➣American Acrylic Injection Inc (Farmersville, TX) |
| AAI➣Angle of Approach Indicator |
| AAI➣Acute Alcohol Intoxication |
| AAI➣Australians against Islam |
| AAI➣Amerinex Applied Imaging, Inc |
| AAI➣Arkansas Aging Initiative |
| AAI➣Alliance for American Innovation |
| AAI➣Alexandria Archive Institute (San Francisco, CA) |
| AAI➣Arrival Aircraft Interval (air traffic control) |
| AAI➣Asociación Argentina para la Infancia (Spanish) |
| AAI➣AFAQ-AFNOR International |
| AAI➣Administrative Authority Identifier |
| AAI➣Abbreviations, Acronyms and Initialisms |
| AAI➣Air-to-Air Interrogator |
| AAI➣Alliance Academy International |
| AAI➣American Atelier, Inc. (Allentown, PA) |
| AAI➣Automated AUTODIN Interface |
| AAI➣Armstrong Associates, Inc. |
| AAI➣Air-to-Air Interface |
| AAI➣Agent Administratif des Impôts (French: Tax Administrative Officer) |
| AAI➣Automatic Accounting Instruction (J.D. Edwards) |
| AAI➣Aortic Arch Interruption |
| AAI➣Air-to-Air Intercept |
| AAI➣Applications Alarms Infrastructure |
| AAI➣Aircraft Armament Incorporated |
| AAI➣Asean Australasia and India |
| AAI➣Alternatives to Abortion International |
| AAI➣All American Industries Company |
| AAI➣Association des Anciens de l'Isty (French: Association of the Former students of ISTY, French school in Versailles) |
| AAI➣Audit Action Item |
| AAI➣Antenna-Air Interface |
| AAI➣Agents Available Interval (Sprint) |
| AAI➣Automated Acquisition Information |
| AAI➣AMMRL Activity Identifier |
| AAI➣Army Analysis Intelligence |
| AAI➣Aesthetic Artist Interview |
| AAI➣Airborne Alert Indoctrination |
| AAI➣American Alpine Institution |
| AAI➣All Actors Integration |
| AAI➣Automobiles Anciennes de l'Indre (French automobile club) |
| AAI➣Atlantique Automatismes Incendie (French: Atlantic Fire Automation; fire protection system company) |
| AAI➣Automobile Association Ireland (est. 1910) |
| AAI➣Agence Azur Investigations (French private detective agency; Nice, France) |