| Acronym | Definition |
|---|
| IADA | Internationale Arbeitsgemeinschaft der Archiv (German: International Archives Association; est. 1957; Switzerland) |
| IADA | International Anti-Doping Arrangement (athletics; est. 1991; various countries) |
| IADA | Intra-Asia Discussion Agreement (shipping) |
| IADA | Iowa Agricultural Development Authority |
| IADA | Independent Automotive Damage Appraisers Association |
| IADA | Interior Arrangement and Design Association (Dallas, TX, USA) |
| IADA | Israel Anti-Drug Authority (est. 1988) |
| IADA | International Academy for Dental Advancement (Florida) |