| Term | Full Form | Category |
|---|---|---|
| GMMC | Casablanca-Anfa, Morocco | Others |
| GMMC | Gac Mitsubishi Motors Company | Others |
| GMMC | Garuda Mataram Motor Company | Others |
| GMMC | Genetically Modified Mouse Core | Others |
| GMMC | Grant MacEwan Mountain Club | Others |
| GMMC | Greater Madison Music City | Others |
| GMMC | Gunner's Mate (mounts) Chief Petty Officer | Others |