| 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 |