| Acronym | Definition |
|---|
| IAR➣Industrial Augmented Reality |
| IAR➣Informacyjnej Agencji Radiowej (Polish: Radio Information Agency) |
| IAR➣Internet Access Router |
| IAR➣Institutt for Arkeologi (Norwegian: Institute for Archaeology) |
| IAR➣Inappropriate Action Required |
| IAR➣Initial Address Reject |
| IAR➣Internet Address Registry |
| IAR➣Ignore All Rules (Wikipedia) |
| IAR➣International Animal Rescue |
| IAR➣Institute for Aerospace Research |
| IAR➣Institute of Audio Research (New York, NY) |
| IAR➣Investment Advisor Representative |
| IAR➣Infantry Automatic Rifle (US Marine Corps) |
| IAR➣Institute for Agricultural Research (Nigeria) |
| IAR➣Interim Assistance Reimbursement |
| IAR➣Idemitsu Australia Resources Pty. Ltd. (est. Idemitsu Kosan Co., Ltd.) |
| IAR➣Informal Administrative Review (various locations) |
| IAR➣Instruction Address Register |
| IAR➣Initial Assessment Report |
| IAR➣Industry Analysis and Research (Benfield) |
| IAR➣Initiative for Architectural Research |
| IAR➣Initial Address Reject (ATMF) |
| IAR➣Independent Annual Review |
| IAR➣Inventory Adjustment Report |
| IAR➣In A single Round (gaming) |
| IAR➣International Association of Rubberists |
| IAR➣Ion Assisted Reaction |
| IAR➣Independent Assessment Report |
| IAR➣Investment Analysis Report |
| IAR➣Independent Applied Research |
| IAR➣Irradiation Anneal Reirradiation |
| IAR➣Instantaneous-to-Average Power Ratio |
| IAR➣Intelligence Area of Responsibility |
| IAR➣Interoperability Assessment Report |
| IAR➣Internal Anomaly Report |
| IAR➣Independent Architecture Review |
| IAR➣Inter-Agency Rate |
| IAR➣Integrated Avionics Racks |
| IAR➣Incident/Accident Report |
| IAR➣Imagery Analysis Report |
| IAR➣Initial Address Register |
| IAR➣I am Revolution (band) |
| IAR➣Inertial Attitude Reference |
| IAR➣Instruction Access Register |
| IAR➣Instruction Approval Release |
| IAR➣ISDN Automatic Recall |
| IAR➣Illinois Auto Racing |
| IAR➣Immediate Air Request |
| IAR➣Intra-Area Routing (Cisco) |
| IAR➣Institute for American Relations |
| IAR➣Internal Assessment Review |
| IAR➣Inventory Adjustment Rate |
| IAR➣Immediate-Phase Asthmatic Reaction |