| Abbreviation | Definition |
|---|---|
| IAB | Internet Architecture Board |
| IABR | International Architecture Biennal Rotterdam |
| IABR | International Architecture Biennale Rotterdam |
| IACA | Intel Architecture Code Analyzer |
| IAD | Inactive Door |
| IAD | Interior Architecture and Design |
| IAD | Interior Architecture Design |
| IADA | INDEX Architecture Design Awards |
| IAED | Interior Architecture and Environmental Design |
| IAF | Integrated Architecture Framework |
| IAFD | Interior Architecture and Furniture Design |
| IAFD | Interior Architecture Furniture Design |
| IAG | Intel Architecture Group |
| IAID | Interior Architecture and Industrial Design |
| IALD | International Association of Lighting Designers |
| IAQ | Inadequate Architectural Quality |
| IASAE | Information Assurance Security Architecture and Engineering |
| IASAE | Information Assurance System Architect and Engineer |
| IASAE | Information Assurance System Architecture and Engineering |
| IASAE | Information Assurance Systems Architecture Engineer |