| Acronym | Definition |
|---|
| IASH | Israel Academy of Sciences and Humanities |
| IASH | Institute for Advanced Studies in the Humanities |
| IASH | Internet Advertising Sales House |
| IASH | Israel Association of Software Houses |
| IASH | Inter-American Society of Hypertension |
| IASH | International Association of Scientific Hydrology |
| IASH | International Association for Small Hydro (India) |
| IASH | International Association for the Stability, Handling and Use of Liquid Fuels |
| IASH | I Am So Horny |
| IASH | Independent Audit of Spectrum Holdings (UK) |
| IASH | Institute for Advanced Studies of Health |
| IASH | Ideal American Stock Horse |
| IASH | Improved Army Space Heater (US Army) |
| IASH | International Academy of Somatic Harmonization |
| IASH | Indo-American Senior Heritage (Artesia, CA) |