| IABA | Independent Auto Body Association 
| Others |
| IABA | Indian American Bar Association
| Others |
| IABA | Indiana Auto Body Association
| Others |
| IABA | Institute for Applied Behavior Analysis
| Others |
| IABA | Inter American Bar Association
| Others |
| IABA | Interior Alaska Building Association
| Others |
| IABA | International Association for Biography and Autobiography
| Others |
| IABA | International Association of Black Actuaries
| Others |
| IABA | International Association of Boalt Alumni
| Others |
| IABA | International Auto Biographical Association
| Others |
| IABA | International Auto Biography Association
| Others |
| IABA | Iranian American Bar Association
| Others |
| IABA | Irish Amateur Boxing Association
| Others |
| IABA | Irish Athletic Boxing Association
| Others |
| IABA | Islamic Ahlul Bayt Association
| Others |