| Acronym | Definition |
|---|
| GMMC➣Geotechnical Microanalysis and Micromorphology Centre (UK) |
| GMMC➣Grant MacEwan Mountain Club (Alberta, Canada) |
| GMMC➣George Mason Mortgage Corp. (Fairfax, VA) |
| GMMC➣Grids Meet Multi-Core Systems (workshop) |
| GMMC➣Guam Mini Motoring Club |