GMSG
| 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) |