| Abbreviation | Definition |
|---|---|
| IASAE | Iranian American Society of Architects and Engineers |
| IASC | Canadian Aeronautics and Space Institute |
| IASC | Institut Aéronautique et Spatial du Canada |
| IASC | Institut Aronautique et Spatial du Canada |
| IASC | International Association for Statistical Computing |
| IASCA | International Arab Society of Certified Accountants |
| IASE | International Association for Statistics Education |
| IASH | Inter American Society of Hypertension |
| IASH | Israel Academy of Sciences and Humanities |
| IASH | ÔÐçÓÞÙÔ ÔÙéèÐÜÙê ÔÜÐÕÞÙê ÜÞÓâÙÝ |
| IASPEI | Association Internationale de Séismologie et de Physique de l'Intérieur de la Terre |
| IASPEI | Association Internationale de Sismologie et de Physique de l'Intrieur de la Terre |
| IASPM | International Association for the Study of Popular Music |
| IASPRR | International Association for Sexual Plant Reproduction Research |
| IASS | International Adam Smith Society |
| IASSA | Investment Analysts Society of South Africa |
| IASTED | International Association of Science and Technology for Development |
| IATAL | International Association of Theoretical and Applied Limnology |
| IATAL | Societas Internationalis Limnologiae |
| IATS | Iowa Athletic Trainers Society |