| Acronym | Definition |
|---|
| AIRG | Adaptation and Impacts Research Group (meteorology; Canada) |
| AIRG | Association pour l'Information et la Recherche sur les maladies rénales Génétiques |
| AIRG | Acute Insulin Response to Glucose |
| AIRG | Artificial Intelligence Research Group (various locations) |
| AIRG | Asset Identification and Removal Group (various locations) |
| AIRG | Asociación Independiente de Radiodifusoras Guatemaltecas (Independent Association of Guatemalan Broadcasters) |
| AIRG | Associazione Italiana Rotariani Golfisti (Italian: Italian Rotarian Golfers Association; Milan, Italy) |