| Acronym | Definition |
|---|
| ISAC➣Illinois Student Assistance Commission |
| ISAC➣Istituto di Scienze dell'Atmosfera e del Clima (Italy) |
| ISAC➣Intelligent Secure Autonomic Controller |
| ISAC➣Isa Client |
| ISAC➣Iowa State Association of Counties |
| ISAC➣International Society for Analytical Cytology |
| ISAC➣Information Sharing Analysis Center |
| ISAC➣International Scientific Advisory Committee |
| ISAC➣Industry Sector Advisory Committee |
| ISAC➣Information System Audit and Control (computing) |
| ISAC➣ISRO Satellite Center (Indian Space Research Organisation) |
| ISAC➣Information Society Activity Centre |
| ISAC➣International Standard Accuracy Contest (Atlatl competition) |
| ISAC➣Intelsat Solar Array Coupon (NASA) |
| ISAC➣Infrastructure Sector Advisory Committee (US FEMA) |
| ISAC➣Illinois State Advisory Council on the Education of Children with Disabilities |
| ISAC➣Isotope Separator and Accelerator Facility (Triumf, University of British Columbia) |
| ISAC➣Information Systems Work and Analysis of Changes |
| ISAC➣Intelligent Secure Autonomic Controller (Symbium) |
| ISAC➣Intermediate Systems Acquisition Course (DSMC) |
| ISAC➣Indian Satellite Applications Center |
| ISAC➣Information Sharing and Assessment Center (60 Private Companies) |
| ISAC➣Internal Scientific Advisory Committee |
| ISAC➣ISDN Subscriber Access Circuit |
| ISAC➣Installation Support Agreement Catalog (various locations) |