IIIA
| Acronym | Definition |
|---|---|
| IIIA | Institute for Infrastructure and Information Assurance (homeland security; James Madison University; Virginia) |
| IIIA | International Imaging Industry Association |
| IIIA | Internet Information Infrastructure Architecture |
| IIIA | Integrated Intelligence Information Application |
| IIIA | Idea Image Institute of Architects (est. 1984; South Korea) |