| Abbreviation | Definition |
|---|---|
| IIA | International Institute for Analytics |
| IIAA | International Institute for Accelerator Applications |
| IIAA | International Institute for Anti Ageing |
| IIAA | International Institute of Applied Aesthetics |
| IIAB | Indian Institute of Agricultural Biotechnology |
| IIAB | Institute of Internal Auditors Bangladesh |
| IIAB | International Institute of Administration and Business |
| IIAD | Indian Institute of Art and Design |
| IIAD | Indian Institute of Art Design |
| IIAD | Institute for Infectious Animal Diseases |
| IIAD | International Institute of Academic Development |
| IIAE | Indian Institute of Aeronautical Engineering |
| IIAE | Indian Institute Of Aircraft Engineering |
| IIAE | Institute of Industrial Applications Engineers |
| IIAE | International Institute for Animal Ethics |
| IIAJ | Institute of Internal Auditors Japan |
| IIAL | International Institute for Animal Law |
| IIALC | Indian Institute of Architects Ludhiana Center |
| IIALC | Indian Institute of Architects Ludhiana Centre |
| IIAM | Indian Institute of Arbitration and Mediation |