| Acronym | Definition |
|---|
| ISRG➣Intelligence, Surveillance and Reconnaissance Group |
| ISRG➣Information Security Research Group (various locations) |
| ISRG➣Interactive Systems Research Group (various universities; UK) |
| ISRG➣International Slide Rule Group |
| ISRG➣Intelligent Systems Research Group |
| ISRG➣Independent Space Research Group |
| ISRG➣Internet Security Research Group (Sun Microsystems Laboratories) |
| ISRG➣Independent Safety Review Group |