IIDA
| Acronym | Definition |
|---|---|
| IIDA | International Interior Design Association (Chicago, IL) |
| IIDA | International Illumination Design Awards (Illuminating Engineering Society of North America) |
| IIDA | Integrated Icing Diagnostic Algorithm |
| IIDA | International Institute for Disability Advocacy |
| IIDA | Intercollegiate/Interscholastic Dressage Association |