| ISAR | I Sure Am Rescue 
| Others |
| ISAR | Identification of Seniors At Risk
| Others |
| ISAR | Income Support Application Rejection
| Others |
| ISAR | Indian Society For Assisted Reproduction
| Others |
| ISAR | Indian Students At RICE
| Others |
| ISAR | Indiana State Association of Remanufacturers
| Others |
| ISAR | Industry Safety Accident Rating
| Others |
| ISAR | Infobase of State Activities and Research
| Others |
| ISAR | Information Saving And Retrieval
| Others |
| ISAR | Input Segmentation And Reassembly
| Others |
| iSAR | Instant Specific Absorption Rate
| Others |
| ISAR | Institute for the Study of Academic Racism
| Others |
| ISAR | Inteligible semi automated reasoning
| Others |
| ISAR | Intelligible Semi Automated Reasoning
| Others |
| ISAR | Intelligible Semi-Automated Reasoning
| Others |
| ISAR | Interactive Streaming for Augmented Reality
| Others |
| ISAR | International Search And Rescue
| Others |
| ISAR | International Severe Asthma Registry
| Others |
| ISAR | International Society for Aeolian Research
| Others |
| ISAR | International Society for Animal Rights
| Others |
| ISAR | International Society for Animal Rights International Society for
| Others |
| ISAR | International Society for Antiviral Research
| Others |
| ISAR | International Society for Astrological Research
| Others |
| ISAR | International Society for Auricular Reconstruction
| Others |
| ISAR | International Society of Arthroplasty Registries
| Others |
| ISAR | International Space Analogue Rockstore
| Others |
| ISAR | International Standards of Accounting and Reporting
| Others |
| ISAR | International Symposium on Arctic Research
| Others |
| ISAR | International Symposium on Audit Research
| Others |
| ISAR | International Symposium on Augmented Reality
| Others |
| ISAR | Internet Security Assessment of Risks
| Others |
| ISAR | Interpretive Services Appointment Record
| Others |
| ISAR | Intracoronary Stenting and Antithrombotic Regimen
| Others |
| ISAR | Inverse Synthetic Aperture Radar
| Others |