AAI ACR Rifle

AAI may refer to:

Business

* AAI Corporation, a United States defense company
* Adam Aircraft Industries, a United States company
*Ahrens Aircraft Inc, an aircraft manufacturer established at Oxnard, California
*American Athletic Inc., an athletic apparel brand owned by Fruit of the Loom
* Arlington Asset Investment, a real estate investment trust headquartered in Arlington, Virginia
* AutoAlliance International, a joint-venture automobile assembly firm co-owned by Ford and Mazda
* Aviation Industries Ilyushin, a Russian company

Non-profit organizations

* Adım Adım Initiative, a volunteer-based social initiative in Turkey that promotes charitable giving
* Africa-America Institute, an international organization dedicated to increasing educational opportunity for young Africans and improving global understanding of Africa
* AIESEC Alumni International, an international project of association for former volunteer members, executive boards, international trainees or staff of AIESEC
* Airline Ambassadors International, a non-profit organization
* American Antitrust Institute, an independent Washington-based non-profit education, research, and advocacy organization
* American Association of Immunologists, a non-profit organization dedicated to advancing the field of immunology
* Arab American Institute, a non-profit organization based in Washington D.C. that focuses on the issues and interests of Arab-Americans nationwide
* Architectural Association of Ireland, an organisation dedicated to architecture
* Asian Arts Initiative, a non-profit organization in Philadelphia
* Atheist Alliance International, a global network of atheist organizations around the world

Education

* Alliance Academy International, an international school following an American curriculum in Quito, Ecuador
*Andreyev Acoustics Institute, a Russian research facility dedicated to the study of acoustics
* Africa-America Institute, CIA run education organisation

Technology

* AAI, IATA airport code for Arraias Airport in Arraias, Tocantins, Brazil
* AAI Sparrowhawk, an American two seat pusher ultralight autogyro, available in kit form for amateur construction
* AAI Corporation Aerosonde, a small unmanned aerial vehicle (UAV) designed to collect weather data over oceans and remote areas
* AAI underwater revolver, an amphibious firearm intended for naval use
* Authentication and authorization infrastructure, access-control for network content

Science

* Alpha amylase inhibitor, a group of proteins that blocks the Enzyme Alpha-Amylase
* ''AAI'' mode of an artificial pacemaker: Atrial chamber paced, Atrial chamber sensed, and Inhibiting response to sensing
* ''Atlantoaxial instability,'' caused by laxity of the transverse ligament of atlas, a ligament which arches across the ring of the atlas (the topmost cervical vertebra, which directly supports the skull)

Entertainment

* ''Aai'' (film), an Indian Tamil language film starring R. Sarath Kumar, Namitha Kapoor, Vadivelu, Kalabhavan Mani
* ''AAI'' (album), 2021 album by Mouse on Mars
* '' Ace Attorney Investigations: Miles Edgeworth'', a 2009 spin-off video game that's part of the ''Ace Attorney'' series

Sports

* Associação Atlética Iguaçu, a Brazilian football team from the city of União da Vitória, Paraná state
* Athletics Ireland (Athletics Association of Ireland), governing body for athletics in Ireland

Other uses

* Arifama-Miniafia language, a language of Papua New Guinea
* Adult Attachment Interview, a method used in attachment theory
*Airports Authority of India, a wing of the ministry of aviation in India
* Automatic Accounting Instructions, programming used by Oracle JD Edwards EnterpriseOne to determine how to distribute amounts associated with journal entries that the system generates.

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