| Acronym | Definition |
|---|
| AIR | All India Radio |
| AIR | Aircraft Certification Service (FAA) |
| AIR | Association for Institutional Research |
| AIR | Secondary Air Injection (automotive) |
| AIR | Artist in Residence (residency programs) |
| AIR | Adobe Integrated Runtime |
| AIR | American Institutes for Research |
| AIr | Advanced Infrared |
| AIR | Annals of Improbable Research |
| AIR | Aviation Investment and Reform Act for the 21st Century |
| AIR | Airborne Infantry Regiment |
| AIR | Artificial Intelligence Research |
| AIR | America's Investigative Reports (US PBS) |
| AIR | Assumed Interest Rate (finance) |
| AIR | Association of Independents in Radio |
| AIR | Automatic Image Refinement |
| AIR | Accessibility Internet Rally (web design competition) |
| AIR | Australian Institute of Radiography |
| AIR | Accrued Interest Receivable |
| AIR | Acute Insulin Response |
| AIR | Average-Issue Readership |
| AIR | All India Rank (academic testing) |
| AIR | Art Is Resistance (Year Zero Arg Slogan) |
| AIR | Allergy Internet Resources |
| AIR | Assumed Investment Return |
| AIR | Airborne Intercept Radar |
| AIR | Alliance for International Reforestation (Guatemala) |
| AIR | Aircraft Investor Resources |
| AIR | Atmosphere Improves Results (UK smoking bans) |
| AIR | Applied Insurance Research, Inc. (Boston, MA, USA) |
| AIR | Atmospheric Ionizing Radiation (DOE project) |
| AIR | Area of Intelligence Responsibility |
| AIR | Additive Increase Rate |
| AIR | Adversarial Information Retrieval |
| AIR | Aerospace Information Reports (Society of Automotive Engineers) |
| AIR | Action Item Request |
| AIR | Air Improvement Resource, Inc. (Novi, MI) |
| AIR | Action Item Report |
| AIR | Association Information Recherche (centre de ressources pour handicap / resources related to handicapped) |
| AIR | Airport Impact Review |
| AIR | Air Information Review (Air Infiltration and Ventilation Centre; Belgium) |
| AIR | Air Inflatable Retarder |
| AIR | Apple Internet Router |
| AIR | Acoustic Intercept Receiver |
| AIR | Automatic Inventory Replenishment |
| AIR | Alliance Intelligence Reports (Star Wars novel) |
| AIR | Automatic Increase Rider |
| AIR | Authors in Residence |
| AIR | Aircraft Inventory Record |
| AIR | Atmospheric Ion Research |
| AIR | Aerosol Ionic Redistribution |
| AIR | Annual Infrastructure Report |
| AIR | Aerial Inversion Ride (rollercoaster) |
| AIR | Association Internationale des Radioamateurs (French: International Association of Amateur Radio) |
| AIR | Advances in Radio Frequency Identification (Workshop) |
| AIR | Analisi Impatto Regolazione (modalità di controllo dell'attività legislativa) |
| AIR | Alliance for Industry Reform |
| AIR | Advies en Ingenieursbureau Rufer (Netherlands) |
| AIR | Anterior Interval Release |
| AIR | Amp Interrupt Rating |
| AIR | Assumptions, Issues & Risks |
| AIR | Automatic Idiomatic Representation (VirtualSelf) |
| AIR | Annals of Irreproducible Results |
| AIR | Armament Integration Review |
| AIR | Ancillary Items Rack |
| AIR | Accelerated Item Reduction |
| AIR | Alternative Independent Resource |
| AIR | Associazione Italiana delle Rosa (Italian: Italian Rose Association) |
| AIR | Alternation Installation Requirement |
| AIR | Agent Investigation Report |
| AIR | Alianza para la Repoblación Forestal Internacional (Alliance for International Reforestation, Guatemala) |
| AIR | Address Inquiry Response |
| AIR | Automated Incoming Routing (Teltronics Vision PBX) |
| AIR | Architectuur International Rotterdam (Dutch: Architecture International Rotterdam; Rotterdam, Netherlands) |
| AIR | Amnesty International Report (human rights) |
| AIR | Annual Information Return (taxes) |