| ISAB | I S*** At Battles 
| Others |
| ISAB | Immunodominant Staphylococcal Antigen B
| Others |
| ISAB | Immunodominant Surface Antigen B
| Others |
| ISAB | Independent Scientific Advisory Board
| Others |
| ISAB | Information Systems Advisory Body
| Others |
| ISAB | Institute for the Study of Animal Behaviour
| Others |
| ISAB | International Scholars Advisory Board
| Others |
| ISAB | International Scientific Advisory Board
| Others |
| ISAB | International Security Advisory Board
| Others |
| ISAB | International Sport Association of Budapest
| Others |
| ISAB | International Student Advisory Board
| Others |
| ISAB | International Students Association at Berkeley
| Others |
| ISAB | IPTAY Student Advisory Board
| Others |
| ISAB | ISSS Student Advisory Board
| Others |