GBM
GBM is an abbreviation for:
- Game Boy Micro
- Community fire chief, rank in the volunteer fire brigade, see community fire chief (Lower Saxony)
- Geometric Brownian motion , a stochastic process
- Society for Biochemistry and Molecular Biology
- Society for the protection of civil rights and human dignity
- Organization of care for people with disabilities
- Glioblastoma multiforme , a malignant brain tumor, see glioblastoma
- Gnadauer Brazil Mission
- Isle of Man license plate , Great Britain Isle of Man
- Grand Bauhinia Medal , the highest order of merit in the city of Hong Kong
- Grand Besançon Métropole
- Green Belt Movement , a non-governmental organization
