| Abbreviation | Definition |
|---|---|
| ISHR | International Society for the History of Rhetoric |
| ISHS | Illinois State Horticultural Society |
| ISHS | International Society for Heresy Studies |
| ISHS | International Society for Horticultural Science |
| ISHS | International Society for Humor Studies |
| ISICE | 'F,EF EGF/3'F CF*1D H '(2'1/BÌB 'Ì1'F |
| ISICE | Iranian Society of Instrument & Control Engineers |
| ISID | Illinois Society For International Development |
| ISID | Interdisciplinary Society for International Development |
| ISIE | Imperial Society of Innovative Engineers |
| ISIF | Information Society Innovation Fund |
| ISIF | International Society of Information Fusion |
| ISIJ | å,DüT |
| ISIJ | Iron and Steel Institute of Japan |
| ISIJ | Nippon Tekk Kykai |
| ISIJ | Nippon TekkM KyMkai |
| ISIM | International Society for Invertebrate Morphology |
| ISIM | International Society of Internal Medicine |
| ISIN | International Society of Intraoperative Neurophysiology |
| ISIR | International Society for Immunology of Reproduction |