| Acronym | Definition |
|---|
| GMSG➣Gesellschaft Muslimischer Sozial- und Geisteswissenschaftler eV (Germany) |
| GMSG➣Gay Men's Support Group (various locations) |
| GMSG➣Global Mining Support Group (Kempton Park, South Africa) |
| GMSG➣Glucose Monitoring Study Group (diabetes research) |
| GMSG➣Global Market Solutions Group (Europe) |