| Acronym | Definition |
|---|
| IARS➣International Anesthesia Research Society |
| IARS➣International Association of Research Scholars |
| IARS➣Iraqi Amateur Radio Society (Baghdad, Iraq) |
| IARS➣International Association of Religious Studies |
| IARS➣Integrated Airborne Reconnaissance Strategy |
| IARS➣Image Archive & Retrieval System |
| IARS➣Improved Aerial Refueling System |