| Acronym | Definition |
|---|
| IGSM➣Interim Ground Station Module (Joint Surveillance Target Attack Radar System; US DoD) |
| IGSM➣International Geodetic Student Meeting |
| IGSM➣I'm Going Slightly Mad (Queen song) |
| IGSM➣Indian General Service Medal |
| IGSM➣Intermediate General Support Maintenance |