| Abbreviation | Definition |
|---|---|
| IRSI | International Radar Symposium India |
| IRWS | International Integrated Reliability Workshop |
| ISAF | IEEE (Institute of Electrical and Electronics Engineers) International Symposium on Applications of Ferro-electrics |
| ISAM | International Symposium on Advanced Materials |
| ISAP | International Conference on Intelligent System Application to Power Systems |
| ISARC | International Symposium on Automation and Robotics in Construction |
| ISART | International Symposium on Advanced Radio Technologies |
| ISB | International Symposium on Bi-lingualism |
| ISB2 | Second International Symposium on Bilingualism |
| ISB3 | Third International Symposium on Bilingualism |
| ISB4 | Fourth International Symposium on Bilingualism |
| ISBB | Internatiional Symposium on Computational Biology and Bioinformatics |
| ISBC | Illinois Sports Business Conference |
| ISBC | International Small Business Congress |
| ISBI | International Symposium on Biomedical Imaging |
| ISBP | International Symposium on Biological Polyesters |
| ISBS | International Symposium on Blood Substitutes |
| ISC | Information Security Conference |
| ISC | International Security Conference |
| ISC | International Shelby Conference |