GMSC
| Acronym | Definition |
|---|---|
| GMSC | Gateway Mobile Services Switching Center |
| GMSC | Gateway Mobile Switching Center |
| GMSC | General Medical Services Committee (UK) |
| GMSC | Globalisation Management Strategies Conference (California) |
| GMSC | Glenrothes Motor Sport Club (Fife, Scotland, UK) |
| GMSC | Great Moor Sailing Club (UK) |
| GMSC | Geology and Mineral Sciences |
| GMSC | Green Mountain Suzuki Camp (music camp; Rochester, VT) |