| GMMS | Gender Mainstreaming Monitoring System
| Others |
| GMMS | Georgia Morse Middle School
| Others |
| GMMS | Geosynthetic Membrane Monitoring System
| Others |
| GMMS | Giornata Mondiale del Motorismo Storico
| Others |
| GMMS | Global Ministry Mapping System
| Others |
| GMMS | Golden Meadow Middle School
| Others |
| GMMS | Good Morning Metro South
| Others |
| GMMS | Google Maps Made Simple
| Others |
| GMMS | Governance in Muslim Majority States
| Others |
| GMMS | Granby Memorial Middle School
| Others |
| GMMS | Grand Mesa Middle School
| Others |
| GMMS | Granite Mountain Middle School
| Others |
| GMMS | Great Meadows Middle School
| Others |
| GMMS | Great Meadows Morris and Sword
| Others |
| GMMS | Green Mountain Massage School
| Others |
| GMMS | Safi, Morocco
| Others |