| Abbreviation | Definition |
|---|---|
| IACR | Irish Association of Cardiac Rehabilitation |
| IACS | Illinois Association of Cosmetology Schools |
| IACS | Indian Association for the Cultivation of Science |
| IACS | Indian Association of Classification Societies |
| IACS | International Association for Communication and Sport |
| IACT | Indiana Association of Cities and Towns |
| IACT | International Association of Counselors and Therapists |
| IACTS | Indian Association of Cardiovascular and Thoracic Surgeons |
| IACTS | Indian Association of Cardiovascular Thoracic Surgeons |
| IACVB | International Association of Convention and Visitor Bureaus |
| IACVB | International Association of Convention and Visitors Bureaus |
| IACVB | International Association of Convention Visitor Bureaus |
| IACVB | International Association of Convention Visitors Bureaus |
| IAD | Illinois Association of the Deaf |
| IAD | Indian Association Of Denmark |
| IADA | Idaho Automobile Dealers Association |
| IADA | Illinois Automobile Dealers Association |
| IADA | Independent Automobile Dealers Association |
| IADA | Indiana Activity Directors Association |
| IADA | Inland Auto Dismantlers Association |