| Acronym | Definition |
|---|
| GBMC➣Greater Baltimore Medical Center |
| GBMC➣Groupe-Brigade Mécanisé du Canada (French: Mechanized Brigade Group of Canada; Canada) |
| GBMC➣Green Belt Motor Club (UK) |
| GBMC➣Global Business and Management Consulting |
| GBMC➣Golden Buffalo Men's Chorus (University of Colorado at Boulder) |
| GBMC➣Global Bone Mineral Content |