| Abbreviation | Definition |
|---|---|
| IAMA | International Antiquarian Mapsellers Association |
| IAMA | International Artist Managers Association |
| IAMA | International Artist Managers' Association |
| IAMCM | International Association for Mathematical and Computer Modelling |
| IAMFES | International Association of Milk, Food, and Environmental Sanitarians |
| IAMOT | International Association for Management of Technology |
| IAMS | International Association For Mission Studies |
| IAMS | International Association Of Mission Studies |
| IAN | International Association of Nanotechnology |
| IAO | International Accreditation Organization |
| IAO | International Association for Orthodontics |
| IAOM | International Association of Operative Millers |
| IAOP | International Association of Orthotics and Prosthetics |
| IAOTA | International Association Of Trade Associations |
| IAPA | Institute of Analytics Professionals of Australia |
| IAPH | International Alliance of Professional Hypnotists |
| IAPMO | International Association of Plumbing and Mechanical Officials |
| IAPO | International Association of Professional Organizations |
| IAPP | International Association of Privacy Professionals |
| IAPS | Incorporated Association Of Preparatory Schools |