| Alliance Icing Research Study | Academic & Science |
| Atmospheric Infrared Radiometer Sounder | Academic & Science |
| Automatic Intelligent Research System | Academic & Science |
| Artificial Intelligence and Robotics Society | Academic & Science |
| American Aircarriers Suppliers | Business |
| Audit Integrated Reporting System | Business |
| Artificial Intelligence Robot Selection | Computing |
| Advanced Internet Recruitment Strategies | Computing |
| Action Item Reporting System | General |
| Acquisition Of Information Resources Statewide | General |
| Aerometric Information Retrieval System | General |
| Animated Infra Red Spectroscopy | General |
| Automated Import Reference System | General |
| Advanced Information Retrieval Skills | General |
| Aircrew Incident Reporting System | General |
| Applied Information Retrieval Systems | General |
| Administrative Information Resource System | General |
| Assistance Information And Referral For Seniors | General |
| Avira Intelligent Repair System | General |
| Aviation Instruments Repair Specialists | General |
| Anti Insurgent Ray Sky | General |
| Aviation Information Reporting Support | General |
| Airborne Infrared Radiometer System | General |
| Airworthiness Issue Resolution System | General |
| Advanced Inertial Reference Sphere | General |
| Accident and Illness Reporting System | General |
| Area Information Records System | General |
| Aircraft Inventory Reporting System | General |
| Air Injection Reaction System | General |
| Aircooled Interstate Rescue Squad | General |
| Auto Incident Recording System | General |
| Alliance Of Information And Referral Systems | Governmental |
| Access To Information And Reading Services | Governmental |
| Alliance of Information and Referral Services | Governmental |
| AIDS Institute Reporting System | Governmental |
| Advanced Internet Recruiting Strategies | Internet |
| Anesthesia Incident Reporting System | Medical |
| Access Issues Resolution Service | Medical |
| Alliance in Reconstructive Surgery | Medical |
| Asthma Indoor Risk Strategies | Medical |
| Automated Ip Request System | Messaging |
| Amdf Interrogation and Retrieval System | Military and Defence |
| Africa Indoor Residual Spraying | Regional |
| Australian Incident Reporting System | Regional |
| Atmospheric Infrared Sounder | Space Science |
| Athens Inclusive Recreation and Sports | Sports |
