| Acronym | Definition |
|---|
| IBAA | Independent Bankers Association of America |
| IBAA | International Business Alumni Association |
| IBAA | Insurance Brokers Association of Alberta (Canada) |
| IBAA | International Business Achievement Awards |
| IBAA | Italian Business Aviation Association |
| IBAA | International Blown Alcohol Association |
| IBAA | Inter Bank Agency Agreement |
| IBAA | Indoor Billboard Advertising Association |
| IBAA | International Buddhist Association of Australia |
| IBAA | Iowa Black Alumni Association (University of Iowa) |
| IBAA | Indiana Business Aviation Association |
| IBAA | Investment Bankers Association of America |
| IBAA | International Business Aviation Association |
| IBAA | Indirection Barrelshift Accumulate and Add (cryptography) |
| IBAA | Integrated Biological Aquatic Assessment |
| IBAA | International Bartering Alliance Agreement |
| IBAA | International Bureau Against Alcoholism |
| IBAA | International Board of Aircraft Appraisers |
| IBAA | Incinerator Bottom Ash Aggregates |
| IBAA | Iowa Braille Alumni Association |