| Acronym | Definition |
|---|
| IASS➣International Association for Shell and Spatial Structures (est. 1959; Madrid, Spain) |
| IASS➣International Association for Semiotic Studies (est. 1969) |
| IASS➣International Association of Survey Statisticians (Libourne, France) |
| IASS➣Importer Activity Summary Statement |
| IASS➣Image Access Services Specification |
| IASS➣Integrated Amplifier and Speaker System |
| IASS➣Intelligence Analysis & Support System |