| Abbreviation | Definition |
|---|---|
| ISARS | International Society of Acoustic Remote Sensing |
| ISAS | International Society of Anglo Saxonists |
| ISAS | International Society of Anglo-Saxonists |
| ISASC | International Society of Antique Scale Collectors |
| ISAT | Islamic Society of Arlington Texas |
| ISATP | International Society of Anti Terrorism Professionals |
| ISB | International Society for Biocuration |
| ISB | International Society for Biocuration's |
| ISB | International Society of Bassists |
| ISB | International Society of Biometeorology |
| ISB | Islamic Society of Baltimore |
| ISBA | International Society of Business Appraisers |
| ISBB | Indonesian Society for Bioinformatics and Biodiversity |
| ISBD | International Society for Bipolar Disorders |
| ISBE | International Society of Business Education |
| ISBI | International Society for Biomedical Imaging |
| ISBL | International Society of Black Latinos |
| ISBP | International Society for Biochemical Pharmacology |
| ISBP | International Society of Blood Purification |
| ISBR | Islamic Society of Basking Ridge |