IRgA
| Acronym | Definition |
|---|---|
| IRgA | International Reprographic Association |
| IRgA | Instituto Rio Grandense do Arroz (Brazil) |
| IRgA | Indian River Guides Association (est. 2000; Palm Bay, FL) |
| IRgA | Infra-Red Gas Analyzer |
| IRgA | Iron-Regulated Gene A |
| IRgA | International Recreation Go-Kart Association |