| Abbreviation | Definition |
|---|---|
| IBVE | Institute of Basic Vocational Education |
| IBW | Institute of Beauty and Wellness |
| IBW | Institute of the Black World |
| ICA | Institute For Contemporary Art |
| ICA | Institute of Contemporary Art |
| ICAA | Institute Of Chartered Accountants Of Alberta |
| ICAB | Institute of Chartered Accountants of Bangladesh |
| ICAB | Institute of Chartered Accountants of Barbados |
| ICAB | Institute of Cultural Affairs Belgium |
| ICAC | Institute Of Clean Air Companies |
| ICACA | Institute for Classical Architecture Classical America |
| ICAEW | Institute |
| ICAEW | Institute for Chartered Accountants England and Wales |
| ICAEW | Institute of Chartered Accountants in England and Wales |
| ICAEW | Institute of Chartered Accountants in England Wales |
| ICAM | Institute For Complex Adaptive Matter |
| ICAM | institute of Chartered Accountants in Malawi |
| ICAM | Institute Of Chartered Accountants Of Manitoba |
| ICAN | Institute for Children of All Nations |
| ICAN | Institute of Cardiometabolism And Nutrition |