| Acronym | Definition |
|---|
| ISHS➣International Society for Horticultural Science |
| ISHS➣Illinois State Historical Society |
| ISHS➣International Society for Humor Studies |
| ISHS➣Independent Study High School |
| ISHS➣International School for Holocaust Studies (Yad Vashem; Israel) |
| ISHS➣Idaho State Horticultural Society |